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18413979204 = 2234137426787
BaseRepresentation
bin10001001001100011…
…110000011001000100
31202112022011001201210
4101021203300121010
5300202434313304
612243111251420
71221213145365
oct211143603104
952468131653
1018413979204
11789a236135
12369a979b70
131975c279aa
14c697cdb6c
1572b8cdc89
hex4498f0644

18413979204 has 24 divisors (see below), whose sum is σ = 44013902688. Its totient is φ = 5988285760.

The previous prime is 18413979203. The next prime is 18413979211. The reversal of 18413979204 is 40297931481.

It is not an unprimeable number, because it can be changed into a prime (18413979203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18712902 + ... + 18713885.

It is an arithmetic number, because the mean of its divisors is an integer number (1833912612).

Almost surely, 218413979204 is an apocalyptic number.

It is an amenable number.

18413979204 is an abundant number, since it is smaller than the sum of its proper divisors (25599923484).

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

18413979204 is a wasteful number, since it uses less digits than its factorization.

18413979204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37426835 (or 37426833 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 18413979204 in words is "eighteen billion, four hundred thirteen million, nine hundred seventy-nine thousand, two hundred four".

Divisors: 1 2 3 4 6 12 41 82 123 164 246 492 37426787 74853574 112280361 149707148 224560722 449121444 1534498267 3068996534 4603494801 6137993068 9206989602 18413979204