1316137517 has 2 divisors, whose sum is σ = 1316137518. Its totient is φ = 1316137516.

The previous prime is 1316137489. The next prime is 1316137531. The reversal of 1316137517 is 7157316131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 848323876 + 467813641 = 29126^2 + 21629^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316137517 - 2⁶ = 1316137453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316137567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658068758 + 658068759.

It is an arithmetic number, because the mean of its divisors is an integer number (658068759).

Almost surely, 2^1316137517 is an apocalyptic number.

It is an amenable number.

1316137517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316137517 is an equidigital number, since it uses as much as digits as its factorization.

1316137517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 35.

The square root of 1316137517 is about 36278.6096343286. The cubic root of 1316137517 is about 1095.8903171024.

The spelling of 1316137517 in words is "one billion, three hundred sixteen million, one hundred thirty-seven thousand, five hundred seventeen".