18113713 has 4 divisors (see below), whose sum is σ = 18128880. Its totient is φ = 18098548.

The previous prime is 18113699. The next prime is 18113737. The reversal of 18113713 is 31731181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31731181 = 277 ⋅114553.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18113713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18113743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5623 + ... + 8236.

It is an arithmetic number, because the mean of its divisors is an integer number (4532220).

Almost surely, 2^18113713 is an apocalyptic number.

It is an amenable number.

18113713 is a deficient number, since it is larger than the sum of its proper divisors (15167).

18113713 is a wasteful number, since it uses less digits than its factorization.

18113713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15166.

The product of its digits is 504, while the sum is 25.

The square root of 18113713 is about 4256.0207941221. The cubic root of 18113713 is about 262.6248560988.

Adding to 18113713 its reverse (31731181), we get a palindrome (49844894).

The spelling of 18113713 in words is "eighteen million, one hundred thirteen thousand, seven hundred thirteen".