1315737617 has 2 divisors, whose sum is σ = 1315737618. Its totient is φ = 1315737616.

The previous prime is 1315737613. The next prime is 1315737637. The reversal of 1315737617 is 7167375131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 665691601 + 650046016 = 25801^2 + 25496^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315737617 - 2² = 1315737613 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315737611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657868808 + 657868809.

It is an arithmetic number, because the mean of its divisors is an integer number (657868809).

Almost surely, 2^1315737617 is an apocalyptic number.

It is an amenable number.

1315737617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315737617 is an equidigital number, since it uses as much as digits as its factorization.

1315737617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92610, while the sum is 41.

The square root of 1315737617 is about 36273.0977033945. The cubic root of 1315737617 is about 1095.7793127619.

The spelling of 1315737617 in words is "one billion, three hundred fifteen million, seven hundred thirty-seven thousand, six hundred seventeen".