1313442872 has 64 divisors (see below), whose sum is σ = 2961282240. Its totient is φ = 534297600.

The previous prime is 1313442841. The next prime is 1313442929. The reversal of 1313442872 is 2782443131.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 77222 + ... + 92682.

It is an arithmetic number, because the mean of its divisors is an integer number (46270035).

Almost surely, 2^1313442872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313442872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1480641120).

1313442872 is an abundant number, since it is smaller than the sum of its proper divisors (1647839368).

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

1313442872 is a wasteful number, since it uses less digits than its factorization.

1313442872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15552 (or 15548 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 1313442872 is about 36241.4523991520. The cubic root of 1313442872 is about 1095.1419016423.

The spelling of 1313442872 in words is "one billion, three hundred thirteen million, four hundred forty-two thousand, eight hundred seventy-two".