18666968 has 32 divisors (see below), whose sum is σ = 37171200. Its totient is φ = 8763552.

The previous prime is 18666941. The next prime is 18666983. The reversal of 18666968 is 86966681.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18821 + ... + 19787.

It is an arithmetic number, because the mean of its divisors is an integer number (1161600).

Almost surely, 2^18666968 is an apocalyptic number.

It is an amenable number.

18666968 is a deficient number, since it is larger than the sum of its proper divisors (18504232).

18666968 is a wasteful number, since it uses less digits than its factorization.

18666968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1115 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 18666968 is about 4320.5286713549. The cubic root of 18666968 is about 265.2719079266.

The spelling of 18666968 in words is "eighteen million, six hundred sixty-six thousand, nine hundred sixty-eight".