1315525968 has 80 divisors (see below), whose sum is σ = 3780462400. Its totient is φ = 437996160.

The previous prime is 1315525903. The next prime is 1315525969. The reversal of 1315525968 is 8695255131.

1315525968 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 52 + 596 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315525969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616263 + ... + 618393.

It is an arithmetic number, because the mean of its divisors is an integer number (47255780).

Almost surely, 2^1315525968 is an apocalyptic number.

1315525968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1315525968 is an abundant number, since it is smaller than the sum of its proper divisors (2464936432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315525968 is a wasteful number, since it uses less digits than its factorization.

1315525968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577 (or 3565 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 1315525968 is about 36270.1801484360. The cubic root of 1315525968 is about 1095.7205540779.

The spelling of 1315525968 in words is "one billion, three hundred fifteen million, five hundred twenty-five thousand, nine hundred sixty-eight".