1313908992 has 216 divisors, whose sum is σ = 4273513440. Its totient is φ = 397900800.

The previous prime is 1313908943. The next prime is 1313908993. The reversal of 1313908992 is 2998093131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (216).

It is not an unprimeable number, because it can be changed into a prime (1313908993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 835567 + ... + 837137.

Almost surely, 2^1313908992 is an apocalyptic number.

1313908992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313908992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2136756720).

1313908992 is an abundant number, since it is smaller than the sum of its proper divisors (2959604448).

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

1313908992 is a wasteful number, since it uses less digits than its factorization.

1313908992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1587 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1313908992 is about 36247.8825864353. The cubic root of 1313908992 is about 1095.2714358054.

The spelling of 1313908992 in words is "one billion, three hundred thirteen million, nine hundred eight thousand, nine hundred ninety-two".