6139875636 has 54 divisors (see below), whose sum is σ = 15606098690. Its totient is φ = 2035326816.

The previous prime is 6139875619. The next prime is 6139875641. The reversal of 6139875636 is 6365789316.

It can be written as a sum of positive squares in only one way, i.e., 6032628900 + 107246736 = 77670^2 + 10356^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7114141 + ... + 7115003.

Almost surely, 2^6139875636 is an apocalyptic number.

It is an amenable number.

6139875636 is an abundant number, since it is smaller than the sum of its proper divisors (9466223054).

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

6139875636 is a wasteful number, since it uses less digits than its factorization.

6139875636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1097 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 6139875636 is about 78357.3585312828. The cubic root of 6139875636 is about 1831.1328683778.

The spelling of 6139875636 in words is "six billion, one hundred thirty-nine million, eight hundred seventy-five thousand, six hundred thirty-six".