18575868 has 12 divisors (see below), whose sum is σ = 43343720. Its totient is φ = 6191952.

The previous prime is 18575861. The next prime is 18575873. The reversal of 18575868 is 86857581.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18575861) 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, 773983 + ... + 774006.

Almost surely, 2^18575868 is an apocalyptic number.

It is an amenable number.

18575868 is an abundant number, since it is smaller than the sum of its proper divisors (24767852).

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

18575868 is a wasteful number, since it uses less digits than its factorization.

18575868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547996 (or 1547994 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The square root of 18575868 is about 4309.9730857628. The cubic root of 18575868 is about 264.8396704317.

The spelling of 18575868 in words is "eighteen million, five hundred seventy-five thousand, eight hundred sixty-eight".