6315915997 has 2 divisors, whose sum is σ = 6315915998. Its totient is φ = 6315915996.

The previous prime is 6315915967. The next prime is 6315916039. The reversal of 6315915997 is 7995195136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4818303396 + 1497612601 = 69414^2 + 38699^2 .

It is a cyclic number.

It is not a de Polignac number, because 6315915997 - 2²⁷ = 6181698269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6315915967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3157957998 + 3157957999.

It is an arithmetic number, because the mean of its divisors is an integer number (3157957999).

Almost surely, 2^6315915997 is an apocalyptic number.

It is an amenable number.

6315915997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6315915997 is an equidigital number, since it uses as much as digits as its factorization.

6315915997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2296350, while the sum is 55.

The square root of 6315915997 is about 79472.7374449880. The cubic root of 6315915997 is about 1848.4687594369.

The spelling of 6315915997 in words is "six billion, three hundred fifteen million, nine hundred fifteen thousand, nine hundred ninety-seven".