18831968 has 24 divisors (see below), whose sum is σ = 37463832. Its totient is φ = 9317376.

The previous prime is 18831959. The next prime is 18832003. The reversal of 18831968 is 86913881.

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, 71 + ... + 6137.

It is an arithmetic number, because the mean of its divisors is an integer number (1560993).

Almost surely, 2^18831968 is an apocalyptic number.

It is an amenable number.

18831968 is a deficient number, since it is larger than the sum of its proper divisors (18631864).

18831968 is an equidigital number, since it uses as much as digits as its factorization.

18831968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6174 (or 6166 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 18831968 is about 4339.5815466471. The cubic root of 18831968 is about 266.0512084123.

The spelling of 18831968 in words is "eighteen million, eight hundred thirty-one thousand, nine hundred sixty-eight".