18004868 has 12 divisors (see below), whose sum is σ = 36009792. Its totient is φ = 7716360.

The previous prime is 18004813. The next prime is 18004871. The reversal of 18004868 is 86840081.

18004868 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321488 + ... + 321543.

It is an arithmetic number, because the mean of its divisors is an integer number (3000816).

Almost surely, 2^18004868 is an apocalyptic number.

It is an amenable number.

18004868 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.

18004868 is a wasteful number, since it uses less digits than its factorization.

18004868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643042 (or 643040 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 18004868 is about 4243.2143476379. The cubic root of 18004868 is about 262.0977627898.

The spelling of 18004868 in words is "eighteen million, four thousand, eight hundred sixty-eight".