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195918201468 = 223411179307103
BaseRepresentation
bin1011011001110110100…
…0101000001001111100
3200201200212122211120000
42312131220220021330
511202220024421333
6230000434554300
720104015143513
oct2663550501174
9621625584500
10195918201468
11760a7798590
1231b78738990
131562378a882
1496a7d5767a
155169e42713
hex2d9da2827c

195918201468 has 120 divisors (see below), whose sum is σ = 561852910080. Its totient is φ = 59037288480.

The previous prime is 195918201463. The next prime is 195918201509. The reversal of 195918201468 is 864102819591.

195918201468 is a `hidden beast` number, since 1 + 9 + 591 + 8 + 2 + 0 + 1 + 46 + 8 = 666.

195918201468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195918201463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 484405 + ... + 791507.

It is an arithmetic number, because the mean of its divisors is an integer number (4682107584).

Almost surely, 2195918201468 is an apocalyptic number.

195918201468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195918201468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280926455040).

195918201468 is an abundant number, since it is smaller than the sum of its proper divisors (365934708612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195918201468 is a wasteful number, since it uses less digits than its factorization.

195918201468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307309 (or 307298 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

It can be divided in two parts, 195918 and 201468, that added together give a triangular number (397386 = T891).

The spelling of 195918201468 in words is "one hundred ninety-five billion, nine hundred eighteen million, two hundred one thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 9 11 12 18 22 27 33 36 44 54 66 81 99 108 132 162 179 198 297 324 358 396 537 594 716 891 1074 1188 1611 1782 1969 2148 3222 3564 3938 4833 5907 6444 7876 9666 11814 14499 17721 19332 23628 28998 35442 53163 57996 70884 106326 159489 212652 307103 318978 614206 637956 921309 1228412 1842618 2763927 3378133 3685236 5527854 6756266 8291781 10134399 11055708 13512532 16583562 20268798 24875343 30403197 33167124 40537596 49750686 54971437 60806394 91209591 99501372 109942874 121612788 164914311 182419182 219885748 273628773 329828622 364838364 494742933 547257546 604685807 659657244 989485866 1094515092 1209371614 1484228799 1814057421 1978971732 2418743228 2968457598 3628114842 4452686397 5442172263 5936915196 7256229684 8905372794 10884344526 16326516789 17810745588 21768689052 32653033578 48979550367 65306067156 97959100734 195918201468