18302931361 has 24 divisors (see below), whose sum is σ = 21658656096. Its totient is φ = 15332279040.

The previous prime is 18302931349. The next prime is 18302931397. The reversal of 18302931361 is 16313920381.

It is not a de Polignac number, because 18302931361 - 2¹¹ = 18302929313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18302931361.

It is not an unprimeable number, because it can be changed into a prime (18302931161) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1094086 + ... + 1110688.

It is an arithmetic number, because the mean of its divisors is an integer number (902444004).

Almost surely, 2^18302931361 is an apocalyptic number.

18302931361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18302931361 is a deficient number, since it is larger than the sum of its proper divisors (3355724735).

18302931361 is a wasteful number, since it uses less digits than its factorization.

18302931361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17233 (or 17220 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 18302931361 in words is "eighteen billion, three hundred two million, nine hundred thirty-one thousand, three hundred sixty-one".