18289892908 has 24 divisors (see below), whose sum is σ = 36653120000. Its totient is φ = 7822811088.

The previous prime is 18289892903. The next prime is 18289892941. The reversal of 18289892908 is 80929898281.

It is a super-2 number, since 2×18289892908² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18289892908.

It is not an unprimeable number, because it can be changed into a prime (18289892903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640548 + ... + 668491.

Almost surely, 2^18289892908 is an apocalyptic number.

It is an amenable number.

18289892908 is an abundant number, since it is smaller than the sum of its proper divisors (18363227092).

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

18289892908 is a wasteful number, since it uses less digits than its factorization.

18289892908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309549 (or 1309547 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 64.

The spelling of 18289892908 in words is "eighteen billion, two hundred eighty-nine million, eight hundred ninety-two thousand, nine hundred eight".