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8163145180 = 22519471912393
BaseRepresentation
bin1111001101000111…
…11011010111011100
3210001220101202000101
413212203323113130
5113204231121210
63430004310444
7406201406041
oct74643732734
923056352011
108163145180
113509978883
1216b99a2424
13a01295328
145762151c8
1532b9c4a3a
hex1e68fb5dc

8163145180 has 96 divisors (see below), whose sum is σ = 18533007360. Its totient is φ = 3010475520.

The previous prime is 8163145147. The next prime is 8163145181. The reversal of 8163145180 is 815413618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8163145181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3410064 + ... + 3412456.

It is an arithmetic number, because the mean of its divisors is an integer number (193052160).

Almost surely, 28163145180 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8163145180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9266503680).

8163145180 is an abundant number, since it is smaller than the sum of its proper divisors (10369862180).

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

8163145180 is a wasteful number, since it uses less digits than its factorization.

8163145180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659 (or 2657 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 8163145180 is about 90350.1255118110. The cubic root of 8163145180 is about 2013.5040468108.

Adding to 8163145180 its reverse (815413618), we get a palindrome (8978558798).

The spelling of 8163145180 in words is "eight billion, one hundred sixty-three million, one hundred forty-five thousand, one hundred eighty".

Divisors: 1 2 4 5 10 19 20 38 47 76 94 95 188 190 191 235 380 382 470 764 893 940 955 1786 1910 2393 3572 3629 3820 4465 4786 7258 8930 8977 9572 11965 14516 17860 17954 18145 23930 35908 36290 44885 45467 47860 72580 89770 90934 112471 170563 179540 181868 224942 227335 341126 449884 454670 457063 562355 682252 852815 909340 914126 1124710 1705630 1828252 2136949 2249420 2285315 3411260 4273898 4570630 8547796 8684197 9141260 10684745 17368394 21369490 21481961 34736788 42738980 42963922 43420985 85927844 86841970 107409805 173683940 214819610 408157259 429639220 816314518 1632629036 2040786295 4081572590 8163145180