6388692136 has 16 divisors (see below), whose sum is σ = 12028505940. Its totient is φ = 3181090560.

The previous prime is 6388692131. The next prime is 6388692143. The reversal of 6388692136 is 6312968836.

It can be written as a sum of positive squares in 2 ways, for example, as 6382412100 + 6280036 = 79890^2 + 2506^2 .

It is not an unprimeable number, because it can be changed into a prime (6388692131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654891 + ... + 1658746.

Almost surely, 2^6388692136 is an apocalyptic number.

It is an amenable number.

6388692136 is a deficient number, since it is larger than the sum of its proper divisors (5639813804).

6388692136 is a wasteful number, since it uses less digits than its factorization.

6388692136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313884 (or 3313880 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 6388692136 is about 79929.2946046692. The cubic root of 6388692136 is about 1855.5414209948.

The spelling of 6388692136 in words is "six billion, three hundred eighty-eight million, six hundred ninety-two thousand, one hundred thirty-six".