1316972057 has 2 divisors, whose sum is σ = 1316972058. Its totient is φ = 1316972056.

The previous prime is 1316972021. The next prime is 1316972131. The reversal of 1316972057 is 7502796131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1313047696 + 3924361 = 36236^2 + 1981^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316972057 - 2⁶ = 1316971993 is a prime.

It is a super-2 number, since 2×1316972057² = 3468830797837622498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1316972957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658486028 + 658486029.

It is an arithmetic number, because the mean of its divisors is an integer number (658486029).

Almost surely, 2^1316972057 is an apocalyptic number.

It is an amenable number.

1316972057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316972057 is an equidigital number, since it uses as much as digits as its factorization.

1316972057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 1316972057 is about 36290.1096305867. The cubic root of 1316972057 is about 1096.1218965178.

The spelling of 1316972057 in words is "one billion, three hundred sixteen million, nine hundred seventy-two thousand, fifty-seven".