1313929512 has 120 divisors (see below), whose sum is σ = 4281174810. Its totient is φ = 375399360.

The previous prime is 1313929511. The next prime is 1313929537. The reversal of 1313929512 is 2159293131.

1313929512 is a `hidden beast` number, since 1 + 3 + 139 + 2 + 9 + 512 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1081488996 + 232440516 = 32886^2 + 15246^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1313929511) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 11062 + ... + 52442.

Almost surely, 2^1313929512 is an apocalyptic number.

1313929512 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 1313929512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2140587405).

1313929512 is an abundant number, since it is smaller than the sum of its proper divisors (2967245298).

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

1313929512 is a wasteful number, since it uses less digits than its factorization.

1313929512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41413 (or 41393 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 1313929512 is about 36248.1656363463. The cubic root of 1313929512 is about 1095.2771375836.

The spelling of 1313929512 in words is "one billion, three hundred thirteen million, nine hundred twenty-nine thousand, five hundred twelve".