6822138138 has 64 divisors (see below), whose sum is σ = 14540688000. Its totient is φ = 2127790080.

The previous prime is 6822138109. The next prime is 6822138139. The reversal of 6822138138 is 8318312286.

6822138138 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 6822138138.

It is not an unprimeable number, because it can be changed into a prime (6822138139) 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, 3277258 + ... + 3279338.

It is an arithmetic number, because the mean of its divisors is an integer number (227198250).

Almost surely, 2^6822138138 is an apocalyptic number.

6822138138 is an abundant number, since it is smaller than the sum of its proper divisors (7718549862).

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

6822138138 is a wasteful number, since it uses less digits than its factorization.

6822138138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447.

The product of its digits is 110592, while the sum is 42.

The square root of 6822138138 is about 82596.2356164008. The cubic root of 6822138138 is about 1896.5902036372.

The spelling of 6822138138 in words is "six billion, eight hundred twenty-two million, one hundred thirty-eight thousand, one hundred thirty-eight".