1315515259 has 2 divisors, whose sum is σ = 1315515260. Its totient is φ = 1315515258.

The previous prime is 1315515239. The next prime is 1315515263. The reversal of 1315515259 is 9525155131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315515259 - 2⁹ = 1315514747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315515239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657757629 + 657757630.

It is an arithmetic number, because the mean of its divisors is an integer number (657757630).

Almost surely, 2^1315515259 is an apocalyptic number.

1315515259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315515259 is an equidigital number, since it uses as much as digits as its factorization.

1315515259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33750, while the sum is 37.

The square root of 1315515259 is about 36270.0325199744. The cubic root of 1315515259 is about 1095.7175808430.

The spelling of 1315515259 in words is "one billion, three hundred fifteen million, five hundred fifteen thousand, two hundred fifty-nine".