18713399 has 8 divisors (see below), whose sum is σ = 19338912. Its totient is φ = 18098080.

The previous prime is 18713393. The next prime is 18713411. The reversal of 18713399 is 99331781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18713399 - 2²⁴ = 1936183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18713393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277 + ... + 6249.

It is an arithmetic number, because the mean of its divisors is an integer number (2417364).

Almost surely, 2^18713399 is an apocalyptic number.

18713399 is a deficient number, since it is larger than the sum of its proper divisors (625513).

18713399 is an equidigital number, since it uses as much as digits as its factorization.

18713399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097.

The product of its digits is 40824, while the sum is 41.

The square root of 18713399 is about 4325.8986349659. The cubic root of 18713399 is about 265.4916658435.

The spelling of 18713399 in words is "eighteen million, seven hundred thirteen thousand, three hundred ninety-nine".