18142031568 has 20 divisors (see below), whose sum is σ = 46866915008. Its totient is φ = 6047343840.

The previous prime is 18142031561. The next prime is 18142031569. The reversal of 18142031568 is 86513024181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142031561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 188979448 + ... + 188979543.

Almost surely, 2^18142031568 is an apocalyptic number.

It is an amenable number.

18142031568 is an abundant number, since it is smaller than the sum of its proper divisors (28724883440).

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

18142031568 is a wasteful number, since it uses less digits than its factorization.

18142031568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377959002 (or 377958996 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 18142031568 in words is "eighteen billion, one hundred forty-two million, thirty-one thousand, five hundred sixty-eight".