18025868 has 12 divisors (see below), whose sum is σ = 36051792. Its totient is φ = 7725360.

The previous prime is 18025867. The next prime is 18025877. The reversal of 18025868 is 86852081.

18025868 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18025867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321863 + ... + 321918.

It is an arithmetic number, because the mean of its divisors is an integer number (3004316).

Almost surely, 2^18025868 is an apocalyptic number.

It is an amenable number.

18025868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18025868 is a wasteful number, since it uses less digits than its factorization.

18025868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643792 (or 643790 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 18025868 is about 4245.6881656570. The cubic root of 18025868 is about 262.1996225482.

The spelling of 18025868 in words is "eighteen million, twenty-five thousand, eight hundred sixty-eight".