6168857857 has 2 divisors, whose sum is σ = 6168857858. Its totient is φ = 6168857856.

The previous prime is 6168857797. The next prime is 6168857861. The reversal of 6168857857 is 7587588616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5873842881 + 295014976 = 76641^2 + 17176^2 .

It is a cyclic number.

It is not a de Polignac number, because 6168857857 - 2⁷ = 6168857729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6168857795 and 6168857804.

It is not a weakly prime, because it can be changed into another prime (6168857897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3084428928 + 3084428929.

It is an arithmetic number, because the mean of its divisors is an integer number (3084428929).

Almost surely, 2^6168857857 is an apocalyptic number.

It is an amenable number.

6168857857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6168857857 is an equidigital number, since it uses as much as digits as its factorization.

6168857857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22579200, while the sum is 61.

The square root of 6168857857 is about 78542.0769842509. The cubic root of 6168857857 is about 1834.0095288538.

The spelling of 6168857857 in words is "six billion, one hundred sixty-eight million, eight hundred fifty-seven thousand, eight hundred fifty-seven".