18804546 has 12 divisors (see below), whose sum is σ = 40743222. Its totient is φ = 6268176.

The previous prime is 18804521. The next prime is 18804551. The reversal of 18804546 is 64540881.

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 12321 = 4335^2 + 111^2 .

It is a super-2 number, since 2×18804546² = 707221900532232, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18804546.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 522331 + ... + 522366.

Almost surely, 2^18804546 is an apocalyptic number.

18804546 is an abundant number, since it is smaller than the sum of its proper divisors (21938676).

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

18804546 is a wasteful number, since it uses less digits than its factorization.

18804546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044705 (or 1044702 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 18804546 is about 4336.4208744078. The cubic root of 18804546 is about 265.9220096606.

The spelling of 18804546 in words is "eighteen million, eight hundred four thousand, five hundred forty-six".