18713318 has 16 divisors (see below), whose sum is σ = 30572640. Its totient is φ = 8538816.

The previous prime is 18713297. The next prime is 18713327. The reversal of 18713318 is 81331781.

It is a congruent number.

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, 1730 + ... + 6357.

It is an arithmetic number, because the mean of its divisors is an integer number (1910790).

Almost surely, 2^18713318 is an apocalyptic number.

18713318 is a deficient number, since it is larger than the sum of its proper divisors (11859322).

18713318 is a wasteful number, since it uses less digits than its factorization.

18713318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191.

The product of its digits is 4032, while the sum is 32.

The square root of 18713318 is about 4325.8892727392. The cubic root of 18713318 is about 265.4912827872.

The spelling of 18713318 in words is "eighteen million, seven hundred thirteen thousand, three hundred eighteen".