18324305857 has 32 divisors (see below), whose sum is σ = 21729907584. Its totient is φ = 15233433600.

The previous prime is 18324305819. The next prime is 18324305929. The reversal of 18324305857 is 75850342381.

It is a de Polignac number, because none of the positive numbers 2^k-18324305857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18324305957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7238682 + ... + 7241212.

It is an arithmetic number, because the mean of its divisors is an integer number (679059612).

Almost surely, 2^18324305857 is an apocalyptic number.

It is an amenable number.

18324305857 is a deficient number, since it is larger than the sum of its proper divisors (3405601727).

18324305857 is a wasteful number, since it uses less digits than its factorization.

18324305857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 18324305857 in words is "eighteen billion, three hundred twenty-four million, three hundred five thousand, eight hundred fifty-seven".