6389934138 has 48 divisors (see below), whose sum is σ = 15881598720. Its totient is φ = 1818898848.

The previous prime is 6389934127. The next prime is 6389934139. The reversal of 6389934138 is 8314399836.

6389934138 is a `hidden beast` number, since 63 + 89 + 93 + 413 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (6389934139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60370 + ... + 128157.

It is an arithmetic number, because the mean of its divisors is an integer number (330866640).

Almost surely, 2^6389934138 is an apocalyptic number.

6389934138 is an abundant number, since it is smaller than the sum of its proper divisors (9491664582).

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

6389934138 is a wasteful number, since it uses less digits than its factorization.

6389934138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188811 (or 188808 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 6389934138 is about 79937.0636063147. The cubic root of 6389934138 is about 1855.6616561843.

The spelling of 6389934138 in words is "six billion, three hundred eighty-nine million, nine hundred thirty-four thousand, one hundred thirty-eight".