Base | Representation |
---|---|
bin | 10001111111001011… |
… | …110011010000001010 |
3 | 1211212000002001021220 |
4 | 101333023303100022 |
5 | 304023244403010 |
6 | 12512250542510 |
7 | 1252416323160 |
oct | 217713632012 |
9 | 54760061256 |
10 | 19313669130 |
11 | 8211076528 |
12 | 38b0137a36 |
13 | 1a8a4431b2 |
14 | d130a9230 |
15 | 780898970 |
hex | 47f2f340a |
19313669130 has 128 divisors (see below), whose sum is σ = 53886283776. Its totient is φ = 4339008000.
The previous prime is 19313669099. The next prime is 19313669149. The reversal of 19313669130 is 3196631391.
It is a super-2 number, since 2×193136691302 (a number of 21 digits) contains 22 as substring.
It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Harshad number since it is a multiple of its sum of digits (42).
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4765605 + ... + 4769655.
It is an arithmetic number, because the mean of its divisors is an integer number (420986592).
Almost surely, 219313669130 is an apocalyptic number.
19313669130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 19313669130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26943141888).
19313669130 is an abundant number, since it is smaller than the sum of its proper divisors (34572614646).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19313669130 is a wasteful number, since it uses less digits than its factorization.
19313669130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4452.
The product of its (nonzero) digits is 78732, while the sum is 42.
The spelling of 19313669130 in words is "nineteen billion, three hundred thirteen million, six hundred sixty-nine thousand, one hundred thirty".
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