1316974657 has 2 divisors, whose sum is σ = 1316974658. Its totient is φ = 1316974656.

The previous prime is 1316974621. The next prime is 1316974691. The reversal of 1316974657 is 7564796131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164106161 + 152868496 = 34119^2 + 12364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316974657 - 2²³ = 1308586049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1316974657.

It is not a weakly prime, because it can be changed into another prime (1316974957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658487328 + 658487329.

It is an arithmetic number, because the mean of its divisors is an integer number (658487329).

Almost surely, 2^1316974657 is an apocalyptic number.

It is an amenable number.

1316974657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316974657 is an equidigital number, since it uses as much as digits as its factorization.

1316974657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 49.

The square root of 1316974657 is about 36290.1454530014. The cubic root of 1316974657 is about 1096.1226178480.

The spelling of 1316974657 in words is "one billion, three hundred sixteen million, nine hundred seventy-four thousand, six hundred fifty-seven".