18713315 has 8 divisors (see below), whose sum is σ = 22487280. Its totient is φ = 14949792.

The previous prime is 18713297. The next prime is 18713327. The reversal of 18713315 is 51331781.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18713315 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2117 + ... + 6473.

It is an arithmetic number, because the mean of its divisors is an integer number (2810910).

Almost surely, 2^18713315 is an apocalyptic number.

18713315 is a deficient number, since it is larger than the sum of its proper divisors (3773965).

18713315 is an equidigital number, since it uses as much as digits as its factorization.

18713315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221.

The product of its digits is 2520, while the sum is 29.

The square root of 18713315 is about 4325.8889259897. Note that the first 3 decimals coincide. The cubic root of 18713315 is about 265.4912685999.

The spelling of 18713315 in words is "eighteen million, seven hundred thirteen thousand, three hundred fifteen".