18808867902 has 32 divisors (see below), whose sum is σ = 41132367360. Its totient is φ = 5686485120.

The previous prime is 18808867871. The next prime is 18808867927. The reversal of 18808867902 is 20976880881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300502 + ... + 357657.

It is an arithmetic number, because the mean of its divisors is an integer number (1285386480).

Almost surely, 2^18808867902 is an apocalyptic number.

18808867902 is an abundant number, since it is smaller than the sum of its proper divisors (22323499458).

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

18808867902 is a wasteful number, since it uses less digits than its factorization.

18808867902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658608.

The product of its (nonzero) digits is 3096576, while the sum is 57.

The spelling of 18808867902 in words is "eighteen billion, eight hundred eight million, eight hundred sixty-seven thousand, nine hundred two".