18704164 has 6 divisors (see below), whose sum is σ = 32732294. Its totient is φ = 9352080.

The previous prime is 18704137. The next prime is 18704171. The reversal of 18704164 is 46140781.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 6801664 = 3450^2 + 2608^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2338017 + ... + 2338024.

Almost surely, 2^18704164 is an apocalyptic number.

It is an amenable number.

18704164 is a deficient number, since it is larger than the sum of its proper divisors (14028130).

18704164 is a wasteful number, since it uses less digits than its factorization.

18704164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676045 (or 4676043 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18704164 is about 4324.8310949678. The cubic root of 18704164 is about 265.4479855735.

The spelling of 18704164 in words is "eighteen million, seven hundred four thousand, one hundred sixty-four".