18995668 has 12 divisors (see below), whose sum is σ = 34992160. Its totient is φ = 8997912.

The previous prime is 18995633. The next prime is 18995671. The reversal of 18995668 is 86659981.

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, 124896 + ... + 125047.

Almost surely, 2^18995668 is an apocalyptic number.

It is an amenable number.

18995668 is a deficient number, since it is larger than the sum of its proper divisors (15996492).

18995668 is a wasteful number, since it uses less digits than its factorization.

18995668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249966 (or 249964 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The square root of 18995668 is about 4358.4020007338. The cubic root of 18995668 is about 266.8198834782.

The spelling of 18995668 in words is "eighteen million, nine hundred ninety-five thousand, six hundred sixty-eight".