18713305 has 32 divisors (see below), whose sum is σ = 25740288. Its totient is φ = 12960000.

The previous prime is 18713297. The next prime is 18713327. The reversal of 18713305 is 50331781.

It is not a de Polignac number, because 18713305 - 2³ = 18713297 is a prime.

It is a Duffinian 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 31 ways as a sum of consecutive naturals, for example, 74430 + ... + 74680.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 2^18713305 is an apocalyptic number.

It is an amenable number.

18713305 is a deficient number, since it is larger than the sum of its proper divisors (7026983).

18713305 is a wasteful number, since it uses less digits than its factorization.

18713305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 18713305 is about 4325.8877701577. The cubic root of 18713305 is about 265.4912213089.

The spelling of 18713305 in words is "eighteen million, seven hundred thirteen thousand, three hundred five".