1313326944 has 72 divisors (see below), whose sum is σ = 3863583360. Its totient is φ = 422677248.

The previous prime is 1313326907. The next prime is 1313327017. The reversal of 1313326944 is 4496233131.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1313326899 and 1313326908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70272 + ... + 86975.

It is an arithmetic number, because the mean of its divisors is an integer number (53660880).

Almost surely, 2^1313326944 is an apocalyptic number.

It is an amenable number.

1313326944 is an abundant number, since it is smaller than the sum of its proper divisors (2550256416).

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

1313326944 is a wasteful number, since it uses less digits than its factorization.

1313326944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157292 (or 157281 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 1313326944 is about 36239.8529798342. The cubic root of 1313326944 is about 1095.1096806379.

The spelling of 1313326944 in words is "one billion, three hundred thirteen million, three hundred twenty-six thousand, nine hundred forty-four".