18872168 has 32 divisors (see below), whose sum is σ = 42571200. Its totient is φ = 7661952.

The previous prime is 18872143. The next prime is 18872173. The reversal of 18872168 is 86127881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7805 + ... + 9932.

It is an arithmetic number, because the mean of its divisors is an integer number (1330350).

Almost surely, 2^18872168 is an apocalyptic number.

It is an amenable number.

18872168 is an abundant number, since it is smaller than the sum of its proper divisors (23699032).

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

18872168 is a wasteful number, since it uses less digits than its factorization.

18872168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17769 (or 17765 counting only the distinct ones).

The product of its digits is 43008, while the sum is 41.

The square root of 18872168 is about 4344.2108604440. The cubic root of 18872168 is about 266.2403842031.

The spelling of 18872168 in words is "eighteen million, eight hundred seventy-two thousand, one hundred sixty-eight".