1313478280 has 64 divisors (see below), whose sum is σ = 2986424640. Its totient is φ = 519896832.

The previous prime is 1313478263. The next prime is 1313478329. The reversal of 1313478280 is 828743131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2400967 + ... + 2401513.

It is an arithmetic number, because the mean of its divisors is an integer number (46662885).

Almost surely, 2^1313478280 is an apocalyptic number.

1313478280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313478280 is an abundant number, since it is smaller than the sum of its proper divisors (1672946360).

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

1313478280 is a wasteful number, since it uses less digits than its factorization.

1313478280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1313478280 is about 36241.9408972533. The cubic root of 1313478280 is about 1095.1517425566.

The spelling of 1313478280 in words is "one billion, three hundred thirteen million, four hundred seventy-eight thousand, two hundred eighty".