1315832569 has 2 divisors, whose sum is σ = 1315832570. Its totient is φ = 1315832568.

The previous prime is 1315832501. The next prime is 1315832597. The reversal of 1315832569 is 9652385131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 961000000 + 354832569 = 31000^2 + 18837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315832569 - 2⁹ = 1315832057 is a prime.

It is a super-2 number, since 2×1315832569² = 3462830699282279522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315835569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657916284 + 657916285.

It is an arithmetic number, because the mean of its divisors is an integer number (657916285).

Almost surely, 2^1315832569 is an apocalyptic number.

It is an amenable number.

1315832569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315832569 is an equidigital number, since it uses as much as digits as its factorization.

1315832569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 1315832569 is about 36274.4065285705. The cubic root of 1315832569 is about 1095.8056715975.

The spelling of 1315832569 in words is "one billion, three hundred fifteen million, eight hundred thirty-two thousand, five hundred sixty-nine".