18684964 has 12 divisors (see below), whose sum is σ = 32747904. Its totient is φ = 9328424.

The previous prime is 18684959. The next prime is 18684979. The reversal of 18684964 is 46948681.

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, 172 + ... + 6115.

It is an arithmetic number, because the mean of its divisors is an integer number (2728992).

Almost surely, 2^18684964 is an apocalyptic number.

It is an amenable number.

18684964 is a deficient number, since it is larger than the sum of its proper divisors (14062940).

18684964 is a wasteful number, since it uses less digits than its factorization.

18684964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034 (or 7032 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 18684964 is about 4322.6107851621. The cubic root of 18684964 is about 265.3571261937.

The spelling of 18684964 in words is "eighteen million, six hundred eighty-four thousand, nine hundred sixty-four".