6139836885 has 32 divisors (see below), whose sum is σ = 12090758400. Its totient is φ = 2590875648.

The previous prime is 6139836881. The next prime is 6139836929. The reversal of 6139836885 is 5886389316.

It is not a de Polignac number, because 6139836885 - 2² = 6139836881 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6139836881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2247660 + ... + 2250389.

It is an arithmetic number, because the mean of its divisors is an integer number (377836200).

Almost surely, 2^6139836885 is an apocalyptic number.

6139836885 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6139836885 is a deficient number, since it is larger than the sum of its proper divisors (5950921515).

6139836885 is a wasteful number, since it uses less digits than its factorization.

6139836885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498077.

The product of its digits is 7464960, while the sum is 57.

The square root of 6139836885 is about 78357.1112599233. Note that the first 3 decimals coincide. The cubic root of 6139836885 is about 1831.1290160533.

The spelling of 6139836885 in words is "six billion, one hundred thirty-nine million, eight hundred thirty-six thousand, eight hundred eighty-five".