18995408 has 20 divisors (see below), whose sum is σ = 36917280. Its totient is φ = 9468384.

The previous prime is 18995399. The next prime is 18995419. The reversal of 18995408 is 80459981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4091 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (1845864).

Almost surely, 2^18995408 is an apocalyptic number.

It is an amenable number.

18995408 is a deficient number, since it is larger than the sum of its proper divisors (17921872).

18995408 is a wasteful number, since it uses less digits than its factorization.

18995408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 18995408 is about 4358.3721731858. The cubic root of 18995408 is about 266.8186661219.

The spelling of 18995408 in words is "eighteen million, nine hundred ninety-five thousand, four hundred eight".