18613713 has 12 divisors (see below), whose sum is σ = 25445264. Its totient is φ = 12103200.

The previous prime is 18613709. The next prime is 18613729. The reversal of 18613713 is 31731681.

It is not a de Polignac number, because 18613713 - 2² = 18613709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18613703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3198 + ... + 6888.

Almost surely, 2^18613713 is an apocalyptic number.

It is an amenable number.

18613713 is a deficient number, since it is larger than the sum of its proper divisors (6831551).

18613713 is an equidigital number, since it uses as much as digits as its factorization.

18613713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3776 (or 3735 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 18613713 is about 4314.3612505213. The cubic root of 18613713 is about 265.0194028750.

The spelling of 18613713 in words is "eighteen million, six hundred thirteen thousand, seven hundred thirteen".