1315845944 has 32 divisors (see below), whose sum is σ = 2823880320. Its totient is φ = 563091936.

The previous prime is 1315845851. The next prime is 1315845953. The reversal of 1315845944 is 4495485131.

It is a super-2 number, since 2×1315845944² = 3462901096682502272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1315845895 and 1315845904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21047 + ... + 55449.

It is an arithmetic number, because the mean of its divisors is an integer number (88246260).

Almost surely, 2^1315845944 is an apocalyptic number.

1315845944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1315845944 is an abundant number, since it is smaller than the sum of its proper divisors (1508034376).

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

1315845944 is a wasteful number, since it uses less digits than its factorization.

1315845944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35099 (or 35095 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 1315845944 is about 36274.5908867350. The cubic root of 1315845944 is about 1095.8093844182.

The spelling of 1315845944 in words is "one billion, three hundred fifteen million, eight hundred forty-five thousand, nine hundred forty-four".