1313993472 has 72 divisors (see below), whose sum is σ = 3815085120. Its totient is φ = 398177280.

The previous prime is 1313993467. The next prime is 1313993479. The reversal of 1313993472 is 2743993131.

It is a super-2 number, since 2×1313993472² = 3453157688917229568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1313993479) 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 7 ways as a sum of consecutive naturals, for example, 69322 + ... + 86217.

Almost surely, 2^1313993472 is an apocalyptic number.

1313993472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1313993472 is an abundant number, since it is smaller than the sum of its proper divisors (2501091648).

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

1313993472 is a wasteful number, since it uses less digits than its factorization.

1313993472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155569 (or 155555 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 1313993472 is about 36249.0478771512. The cubic root of 1313993472 is about 1095.2949094119.

The spelling of 1313993472 in words is "one billion, three hundred thirteen million, nine hundred ninety-three thousand, four hundred seventy-two".