6923585138 has 18 divisors (see below), whose sum is σ = 11035406343. Its totient is φ = 3257216320.

The previous prime is 6923585083. The next prime is 6923585147. The reversal of 6923585138 is 8315853296.

It can be written as a sum of positive squares in 5 ways, for example, as 3260067409 + 3663517729 = 57097^2 + 60527^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=58837.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1998728 + ... + 2002188.

Almost surely, 2^6923585138 is an apocalyptic number.

6923585138 is a deficient number, since it is larger than the sum of its proper divisors (4111821205).

6923585138 is an frugal number, since it uses more digits than its factorization.

6923585138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6958 (or 3480 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The square root of 6923585138 is about 83208.0833693458. The cubic root of 6923585138 is about 1905.9449194929.

Multiplying 6923585138 by its sum of digits (50), we get a square (346179256900 = 588370²).

The spelling of 6923585138 in words is "six billion, nine hundred twenty-three million, five hundred eighty-five thousand, one hundred thirty-eight".