18899404 has 6 divisors (see below), whose sum is σ = 33073964. Its totient is φ = 9449700.

The previous prime is 18899381. The next prime is 18899449. The reversal of 18899404 is 40499881.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2362422 + ... + 2362429.

Almost surely, 2^18899404 is an apocalyptic number.

It is an amenable number.

18899404 is a deficient number, since it is larger than the sum of its proper divisors (14174560).

18899404 is a wasteful number, since it uses less digits than its factorization.

18899404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724855 (or 4724853 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 18899404 is about 4347.3444768042. The cubic root of 18899404 is about 266.3684005421.

The spelling of 18899404 in words is "eighteen million, eight hundred ninety-nine thousand, four hundred four".