18725836 has 6 divisors (see below), whose sum is σ = 32770220. Its totient is φ = 9362916.

The previous prime is 18725821. The next prime is 18725893. The reversal of 18725836 is 63852781.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2340726 + ... + 2340733.

Almost surely, 2^18725836 is an apocalyptic number.

It is an amenable number.

18725836 is a deficient number, since it is larger than the sum of its proper divisors (14044384).

18725836 is a wasteful number, since it uses less digits than its factorization.

18725836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681463 (or 4681461 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 18725836 is about 4327.3359009904. The cubic root of 18725836 is about 265.5504684271.

The spelling of 18725836 in words is "eighteen million, seven hundred twenty-five thousand, eight hundred thirty-six".