18713568 has 24 divisors (see below), whose sum is σ = 49123368. Its totient is φ = 6237824.

The previous prime is 18713543. The next prime is 18713573. The reversal of 18713568 is 86531781.

It is a tau number, because it is divible by the number of its divisors (24).

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, 97371 + ... + 97562.

It is an arithmetic number, because the mean of its divisors is an integer number (2046807).

Almost surely, 2^18713568 is an apocalyptic number.

It is an amenable number.

18713568 is an abundant number, since it is smaller than the sum of its proper divisors (30409800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18713568 is a wasteful number, since it uses less digits than its factorization.

18713568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194946 (or 194938 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 18713568 is about 4325.9181684355. The cubic root of 18713568 is about 265.4924650562.

The spelling of 18713568 in words is "eighteen million, seven hundred thirteen thousand, five hundred sixty-eight".