6831871693 has 2 divisors, whose sum is σ = 6831871694. Its totient is φ = 6831871692.

The previous prime is 6831871661. The next prime is 6831871703. The reversal of 6831871693 is 3961781386.

6831871693 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6422740164 + 409131529 = 80142^2 + 20227^2 .

It is a cyclic number.

It is not a de Polignac number, because 6831871693 - 2⁵ = 6831871661 is a prime.

It is a super-2 number, since 2×6831871693² = 93348941659229372498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6831871693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6831871093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3415935846 + 3415935847.

It is an arithmetic number, because the mean of its divisors is an integer number (3415935847).

Almost surely, 2^6831871693 is an apocalyptic number.

It is an amenable number.

6831871693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6831871693 is an equidigital number, since it uses as much as digits as its factorization.

6831871693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 6831871693 is about 82655.1371240772. The cubic root of 6831871693 is about 1897.4917681242.

The spelling of 6831871693 in words is "six billion, eight hundred thirty-one million, eight hundred seventy-one thousand, six hundred ninety-three".