1315638908 has 24 divisors (see below), whose sum is σ = 2439152352. Its totient is φ = 618781184.

The previous prime is 1315638833. The next prime is 1315638917. The reversal of 1315638908 is 8098365131.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 151985 + ... + 160407.

It is an arithmetic number, because the mean of its divisors is an integer number (101631348).

Almost surely, 2^1315638908 is an apocalyptic number.

It is an amenable number.

1315638908 is a deficient number, since it is larger than the sum of its proper divisors (1123513444).

1315638908 is a wasteful number, since it uses less digits than its factorization.

1315638908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10741 (or 10739 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 1315638908 is about 36271.7370413935. The cubic root of 1315638908 is about 1095.7519096323.

The spelling of 1315638908 in words is "one billion, three hundred fifteen million, six hundred thirty-eight thousand, nine hundred eight".