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18383930112 = 28337646957
BaseRepresentation
bin10001000111110001…
…001000001100000000
31202110012121102010110
4101013301020030000
5300122241230422
612240115231320
71220366553612
oct210761101400
952405542113
1018383930112
117884281879
1236908a8540
13196c936572
14c6580adb2
15728e4560c
hex447c48300

18383930112 has 72 divisors (see below), whose sum is σ = 50250521776. Its totient is φ = 5962346496.

The previous prime is 18383930063. The next prime is 18383930129. The reversal of 18383930112 is 21103938381.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295063 + ... + 351894.

Almost surely, 218383930112 is an apocalyptic number.

18383930112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18383930112 is an abundant number, since it is smaller than the sum of its proper divisors (31866591664).

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

18383930112 is an equidigital number, since it uses as much as digits as its factorization.

18383930112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647013 (or 646999 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 18383930112 in words is "eighteen billion, three hundred eighty-three million, nine hundred thirty thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 32 37 48 64 74 96 111 128 148 192 222 256 296 384 444 592 768 888 1184 1776 2368 3552 4736 7104 9472 14208 28416 646957 1293914 1940871 2587828 3881742 5175656 7763484 10351312 15526968 20702624 23937409 31053936 41405248 47874818 62107872 71812227 82810496 95749636 124215744 143624454 165620992 191499272 248431488 287248908 382998544 496862976 574497816 765997088 1148995632 1531994176 2297991264 3063988352 4595982528 6127976704 9191965056 18383930112