6838531557 has 64 divisors (see below), whose sum is σ = 11563776000. Its totient is φ = 3533080320.

The previous prime is 6838531519. The next prime is 6838531577. The reversal of 6838531557 is 7551358386.

It is not a de Polignac number, because 6838531557 - 2⁷ = 6838531429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6838531517) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 274194 + ... + 298092.

It is an arithmetic number, because the mean of its divisors is an integer number (180684000).

Almost surely, 2^6838531557 is an apocalyptic number.

It is an amenable number.

6838531557 is a deficient number, since it is larger than the sum of its proper divisors (4725244443).

6838531557 is a wasteful number, since it uses less digits than its factorization.

6838531557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23978.

The product of its digits is 3024000, while the sum is 51.

The square root of 6838531557 is about 82695.4143650058. The cubic root of 6838531557 is about 1898.1081406019.

The spelling of 6838531557 in words is "six billion, eight hundred thirty-eight million, five hundred thirty-one thousand, five hundred fifty-seven".