1315632739 has 2 divisors, whose sum is σ = 1315632740. Its totient is φ = 1315632738.

The previous prime is 1315632719. The next prime is 1315632743. The reversal of 1315632739 is 9372365131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315632739 - 2⁵ = 1315632707 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315632719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657816369 + 657816370.

It is an arithmetic number, because the mean of its divisors is an integer number (657816370).

Almost surely, 2^1315632739 is an apocalyptic number.

1315632739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315632739 is an equidigital number, since it uses as much as digits as its factorization.

1315632739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 1315632739 is about 36271.6520026315. The cubic root of 1315632739 is about 1095.7501969780.

The spelling of 1315632739 in words is "one billion, three hundred fifteen million, six hundred thirty-two thousand, seven hundred thirty-nine".