18964268 has 6 divisors (see below), whose sum is σ = 33187476. Its totient is φ = 9482132.

The previous prime is 18964249. The next prime is 18964271. The reversal of 18964268 is 86246981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2370530 + ... + 2370537.

It is an arithmetic number, because the mean of its divisors is an integer number (5531246).

Almost surely, 2^18964268 is an apocalyptic number.

It is an amenable number.

18964268 is a deficient number, since it is larger than the sum of its proper divisors (14223208).

18964268 is a wasteful number, since it uses less digits than its factorization.

18964268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741071 (or 4741069 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 18964268 is about 4354.7982731695. The cubic root of 18964268 is about 266.6727838875.

The spelling of 18964268 in words is "eighteen million, nine hundred sixty-four thousand, two hundred sixty-eight".