18316831330 has 64 divisors (see below), whose sum is σ = 37952478720. Its totient is φ = 6234868224.

The previous prime is 18316831321. The next prime is 18316831331. The reversal of 18316831330 is 3313861381.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18316831330.

It is not an unprimeable number, because it can be changed into a prime (18316831331) 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, 6343147 + ... + 6346033.

It is an arithmetic number, because the mean of its divisors is an integer number (593007480).

Almost surely, 2^18316831330 is an apocalyptic number.

18316831330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18316831330 is an abundant number, since it is smaller than the sum of its proper divisors (19635647390).

18316831330 is a wasteful number, since it uses less digits than its factorization.

18316831330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 18316831330 in words is "eighteen billion, three hundred sixteen million, eight hundred thirty-one thousand, three hundred thirty".