1315730560 has 32 divisors (see below), whose sum is σ = 3145419900. Its totient is φ = 526291968.

The previous prime is 1315730557. The next prime is 1315730561. The reversal of 1315730560 is 650375131.

It can be written as a sum of positive squares in 2 ways, for example, as 1315077696 + 652864 = 36264^2 + 808^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1315730560² = 3462293813035827200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315730561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027275 + ... + 1028554.

Almost surely, 2^1315730560 is an apocalyptic number.

1315730560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315730560 is an abundant number, since it is smaller than the sum of its proper divisors (1829689340).

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

1315730560 is an equidigital number, since it uses as much as digits as its factorization.

1315730560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055848 (or 2055836 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 1315730560 is about 36273.0004273151. Note that the first 3 decimals coincide. The cubic root of 1315730560 is about 1095.7773536761. Note that the first 3 decimals are identical.

Subtracting from 1315730560 its sum of digits (31), we obtain a square (1315730529 = 36273²).

The spelling of 1315730560 in words is "one billion, three hundred fifteen million, seven hundred thirty thousand, five hundred sixty".