1312578460 has 12 divisors (see below), whose sum is σ = 2756414808. Its totient is φ = 525031376.

The previous prime is 1312578451. The next prime is 1312578479. The reversal of 1312578460 is 648752131.

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 3 ways as a sum of consecutive naturals, for example, 32814442 + ... + 32814481.

It is an arithmetic number, because the mean of its divisors is an integer number (229701234).

Almost surely, 2^1312578460 is an apocalyptic number.

1312578460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312578460 is an abundant number, since it is smaller than the sum of its proper divisors (1443836348).

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

1312578460 is a wasteful number, since it uses less digits than its factorization.

1312578460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65628932 (or 65628930 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1312578460 is about 36229.5247001669. The cubic root of 1312578460 is about 1094.9016014942.

The spelling of 1312578460 in words is "one billion, three hundred twelve million, five hundred seventy-eight thousand, four hundred sixty".