18536804 has 48 divisors (see below), whose sum is σ = 39795840. Its totient is φ = 7434240.

The previous prime is 18536801. The next prime is 18536809. The reversal of 18536804 is 40863581.

It is a super-2 number, since 2×18536804² = 687226205068832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18536801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12452 + ... + 13860.

It is an arithmetic number, because the mean of its divisors is an integer number (829080).

Almost surely, 2^18536804 is an apocalyptic number.

It is an amenable number.

18536804 is an abundant number, since it is smaller than the sum of its proper divisors (21259036).

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

18536804 is a wasteful number, since it uses less digits than its factorization.

18536804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 18536804 is about 4305.4388858745. The cubic root of 18536804 is about 264.6538925269.

The spelling of 18536804 in words is "eighteen million, five hundred thirty-six thousand, eight hundred four".