1312918760 has 16 divisors (see below), whose sum is σ = 2954067300. Its totient is φ = 525167488.

The previous prime is 1312918759. The next prime is 1312918781. The reversal of 1312918760 is 678192131.

It can be written as a sum of positive squares in 2 ways, for example, as 1267787236 + 45131524 = 35606^2 + 6718^2 .

It is a super-4 number, since 4×1312918760⁴ (a number of 38 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16411445 + ... + 16411524.

Almost surely, 2^1312918760 is an apocalyptic number.

1312918760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312918760 is an abundant number, since it is smaller than the sum of its proper divisors (1641148540).

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

1312918760 is a wasteful number, since it uses less digits than its factorization.

1312918760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32822980 (or 32822976 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1312918760 is about 36234.2208416298. The cubic root of 1312918760 is about 1094.9962149671.

The spelling of 1312918760 in words is "one billion, three hundred twelve million, nine hundred eighteen thousand, seven hundred sixty".