18467217908 has 12 divisors (see below), whose sum is σ = 32726715840. Its totient is φ = 9116727672.

The previous prime is 18467217871. The next prime is 18467217919. The reversal of 18467217908 is 80971276481.

It is a happy number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18467217908.

It is a congruent number.

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, 29219966 + ... + 29220597.

It is an arithmetic number, because the mean of its divisors is an integer number (2727226320).

Almost surely, 2^18467217908 is an apocalyptic number.

It is an amenable number.

18467217908 is a deficient number, since it is larger than the sum of its proper divisors (14259497932).

18467217908 is a wasteful number, since it uses less digits than its factorization.

18467217908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58440646 (or 58440644 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 18467217908 in words is "eighteen billion, four hundred sixty-seven million, two hundred seventeen thousand, nine hundred eight".