18631016368 has 40 divisors (see below), whose sum is σ = 37286165120. Its totient is φ = 9009169920.

The previous prime is 18631016311. The next prime is 18631016377. The reversal of 18631016368 is 86361013681.

It is a super-2 number, since 2×18631016368² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810538 + ... + 833206.

It is an arithmetic number, because the mean of its divisors is an integer number (932154128).

Almost surely, 2^18631016368 is an apocalyptic number.

It is an amenable number.

18631016368 is an abundant number, since it is smaller than the sum of its proper divisors (18655148752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18631016368 is a wasteful number, since it uses less digits than its factorization.

18631016368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24365 (or 24359 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 18631016368 in words is "eighteen billion, six hundred thirty-one million, sixteen thousand, three hundred sixty-eight".