6931200138 has 16 divisors (see below), whose sum is σ = 13899569376. Its totient is φ = 2304205200.

The previous prime is 6931200113. The next prime is 6931200139. The reversal of 6931200138 is 8310021396.

It is a super-2 number, since 2×6931200138² = 96083070706022438088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6931200099 and 6931200108.

It is not an unprimeable number, because it can be changed into a prime (6931200139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546288 + ... + 1550763.

It is an arithmetic number, because the mean of its divisors is an integer number (868723086).

Almost surely, 2^6931200138 is an apocalyptic number.

6931200138 is an abundant number, since it is smaller than the sum of its proper divisors (6968369238).

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

6931200138 is a wasteful number, since it uses less digits than its factorization.

6931200138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097429.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 6931200138 is about 83253.8295695760. The cubic root of 6931200138 is about 1906.6434233492.

The spelling of 6931200138 in words is "six billion, nine hundred thirty-one million, two hundred thousand, one hundred thirty-eight".