18131110868 has 24 divisors (see below), whose sum is σ = 34235556768. Its totient is φ = 8352192096.

The previous prime is 18131110859. The next prime is 18131110871. The reversal of 18131110868 is 86801113181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306146 + ... + 360537.

It is an arithmetic number, because the mean of its divisors is an integer number (1426481532).

Almost surely, 2^18131110868 is an apocalyptic number.

It is an amenable number.

18131110868 is a deficient number, since it is larger than the sum of its proper divisors (16104445900).

18131110868 is a wasteful number, since it uses less digits than its factorization.

18131110868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667223 (or 667221 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 38.

The spelling of 18131110868 in words is "eighteen billion, one hundred thirty-one million, one hundred ten thousand, eight hundred sixty-eight".