18808713 has 64 divisors (see below), whose sum is σ = 35481600. Its totient is φ = 9564480.

The previous prime is 18808703. The next prime is 18808721. The reversal of 18808713 is 31780881.

It is not a de Polignac number, because 18808713 - 2⁴ = 18808697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18808703) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172503 + ... + 172611.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^18808713 is an apocalyptic number.

It is an amenable number.

18808713 is a deficient number, since it is larger than the sum of its proper divisors (16672887).

18808713 is a wasteful number, since it uses less digits than its factorization.

18808713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 18808713 is about 4336.9013131497. The cubic root of 18808713 is about 265.9416505704.

The spelling of 18808713 in words is "eighteen million, eight hundred eight thousand, seven hundred thirteen".