18980404 has 12 divisors (see below), whose sum is σ = 33478144. Its totient is φ = 9415224.

The previous prime is 18980393. The next prime is 18980431. The reversal of 18980404 is 40408981.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18980404.

It is a congruent 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, 18174 + ... + 19189.

Almost surely, 2^18980404 is an apocalyptic number.

It is an amenable number.

18980404 is a deficient number, since it is larger than the sum of its proper divisors (14497740).

18980404 is a wasteful number, since it uses less digits than its factorization.

18980404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37494 (or 37492 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18980404 is about 4356.6505482997. The cubic root of 18980404 is about 266.7483964761.

The spelling of 18980404 in words is "eighteen million, nine hundred eighty thousand, four hundred four".