1315926569 has 2 divisors, whose sum is σ = 1315926570. Its totient is φ = 1315926568.

The previous prime is 1315926551. The next prime is 1315926607. The reversal of 1315926569 is 9656295131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1301766400 + 14160169 = 36080^2 + 3763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315926569 is a prime.

It is a super-2 number, since 2×1315926569² = 3463325470000223522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315926169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657963284 + 657963285.

It is an arithmetic number, because the mean of its divisors is an integer number (657963285).

Almost surely, 2^1315926569 is an apocalyptic number.

It is an amenable number.

1315926569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315926569 is an equidigital number, since it uses as much as digits as its factorization.

1315926569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 47.

The square root of 1315926569 is about 36275.7021847958. The cubic root of 1315926569 is about 1095.8317649072.

The spelling of 1315926569 in words is "one billion, three hundred fifteen million, nine hundred twenty-six thousand, five hundred sixty-nine".