18785804 has 12 divisors (see below), whose sum is σ = 33414528. Its totient is φ = 9238800.

The previous prime is 18785803. The next prime is 18785807. The reversal of 18785804 is 40858781.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18785801) by changing a digit.

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, 38252 + ... + 38739.

It is an arithmetic number, because the mean of its divisors is an integer number (2784544).

Almost surely, 2^18785804 is an apocalyptic number.

It is an amenable number.

18785804 is a deficient number, since it is larger than the sum of its proper divisors (14628724).

18785804 is a wasteful number, since it uses less digits than its factorization.

18785804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77056 (or 77054 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 18785804 is about 4334.2593369571. The cubic root of 18785804 is about 265.8336344525.

The spelling of 18785804 in words is "eighteen million, seven hundred eighty-five thousand, eight hundred four".