1313129760 has 96 divisors (see below), whose sum is σ = 4141912320. Its totient is φ = 349698048.

The previous prime is 1313129723. The next prime is 1313129761. The reversal of 1313129760 is 679213131.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1313129761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497404 + ... + 500036.

It is an arithmetic number, because the mean of its divisors is an integer number (43144920).

Almost surely, 2^1313129760 is an apocalyptic number.

1313129760 is a gapful number since it is divisible by the number (10) 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 1313129760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2070956160).

1313129760 is an abundant number, since it is smaller than the sum of its proper divisors (2828782560).

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

1313129760 is a wasteful number, since it uses less digits than its factorization.

1313129760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690 (or 3682 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1313129760 is about 36237.1323368724. The cubic root of 1313129760 is about 1095.0548710019.

The spelling of 1313129760 in words is "one billion, three hundred thirteen million, one hundred twenty-nine thousand, seven hundred sixty".