18408896032 has 24 divisors (see below), whose sum is σ = 37818277056. Its totient is φ = 8804254272.

The previous prime is 18408896027. The next prime is 18408896059. The reversal of 18408896032 is 23069880481.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12505308 + ... + 12506779.

It is an arithmetic number, because the mean of its divisors is an integer number (1575761544).

Almost surely, 2^18408896032 is an apocalyptic number.

It is an amenable number.

18408896032 is an abundant number, since it is smaller than the sum of its proper divisors (19409381024).

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

18408896032 is a wasteful number, since it uses less digits than its factorization.

18408896032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25012120 (or 25012112 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 18408896032 in words is "eighteen billion, four hundred eight million, eight hundred ninety-six thousand, thirty-two".