5638342864 has 80 divisors (see below), whose sum is σ = 14089633920. Its totient is φ = 2120993280.

The previous prime is 5638342861. The next prime is 5638342883. The reversal of 5638342864 is 4682438365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638342861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43179 + ... + 114634.

It is an arithmetic number, because the mean of its divisors is an integer number (176120424).

Almost surely, 2^5638342864 is an apocalyptic number.

It is an amenable number.

5638342864 is an abundant number, since it is smaller than the sum of its proper divisors (8451291056).

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

5638342864 is a wasteful number, since it uses less digits than its factorization.

5638342864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157868 (or 157862 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 49.

The square root of 5638342864 is about 75088.8997389095. The cubic root of 5638342864 is about 1779.8517386928.

The spelling of 5638342864 in words is "five billion, six hundred thirty-eight million, three hundred forty-two thousand, eight hundred sixty-four".