5638391488 has 28 divisors (see below), whose sum is σ = 11675150640. Its totient is φ = 2696621312.

The previous prime is 5638391477. The next prime is 5638391503. The reversal of 5638391488 is 8841938365.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913743 + ... + 1916686.

Almost surely, 2^5638391488 is an apocalyptic number.

It is an amenable number.

5638391488 is an abundant number, since it is smaller than the sum of its proper divisors (6036759152).

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

5638391488 is a wasteful number, since it uses less digits than its factorization.

5638391488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830464 (or 3830454 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 5638391488 is about 75089.2235144298. The cubic root of 5638391488 is about 1779.8568550461.

The spelling of 5638391488 in words is "five billion, six hundred thirty-eight million, three hundred ninety-one thousand, four hundred eighty-eight".