18925896612 has 72 divisors (see below), whose sum is σ = 54392101344. Its totient is φ = 5089314048.

The previous prime is 18925896601. The next prime is 18925896641. The reversal of 18925896612 is 21669852981.

It is a happy number.

It is a super-2 number, since 2×18925896612² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 936678 + ... + 956669.

It is an arithmetic number, because the mean of its divisors is an integer number (755445852).

Almost surely, 2^18925896612 is an apocalyptic number.

18925896612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18925896612 is an abundant number, since it is smaller than the sum of its proper divisors (35466204732).

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

18925896612 is a wasteful number, since it uses less digits than its factorization.

18925896612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893385 (or 1893376 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The spelling of 18925896612 in words is "eighteen billion, nine hundred twenty-five million, eight hundred ninety-six thousand, six hundred twelve".