18948668 has 12 divisors (see below), whose sum is σ = 33193440. Its totient is φ = 9464832.

The previous prime is 18948653. The next prime is 18948679. The reversal of 18948668 is 86684981.

It is a happy number.

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, 4028 + ... + 7356.

It is an arithmetic number, because the mean of its divisors is an integer number (2766120).

Almost surely, 2^18948668 is an apocalyptic number.

It is an amenable number.

18948668 is a deficient number, since it is larger than the sum of its proper divisors (14244772).

18948668 is a wasteful number, since it uses less digits than its factorization.

18948668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756 (or 4754 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 18948668 is about 4353.0067769302. The cubic root of 18948668 is about 266.5996421831.

The spelling of 18948668 in words is "eighteen million, nine hundred forty-eight thousand, six hundred sixty-eight".