18964748 has 12 divisors (see below), whose sum is σ = 36205512. Its totient is φ = 8620320.

The previous prime is 18964723. The next prime is 18964789. The reversal of 18964748 is 84746981.

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, 215465 + ... + 215552.

It is an arithmetic number, because the mean of its divisors is an integer number (3017126).

Almost surely, 2^18964748 is an apocalyptic number.

It is an amenable number.

18964748 is a deficient number, since it is larger than the sum of its proper divisors (17240764).

18964748 is a wasteful number, since it uses less digits than its factorization.

18964748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431032 (or 431030 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 18964748 is about 4354.8533844436. The cubic root of 18964748 is about 266.6750337652.

The spelling of 18964748 in words is "eighteen million, nine hundred sixty-four thousand, seven hundred forty-eight".