1313728850 has 48 divisors (see below), whose sum is σ = 2882720256. Its totient is φ = 435888000.

The previous prime is 1313728849. The next prime is 1313728901. The reversal of 1313728850 is 588273131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49691 + ... + 71390.

It is an arithmetic number, because the mean of its divisors is an integer number (60056672).

Almost surely, 2^1313728850 is an apocalyptic number.

1313728850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313728850 is an abundant number, since it is smaller than the sum of its proper divisors (1568991406).

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

1313728850 is a wasteful number, since it uses less digits than its factorization.

1313728850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121131 (or 121126 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1313728850 is about 36245.3976388727. The cubic root of 1313728850 is about 1095.2213782022.

The spelling of 1313728850 in words is "one billion, three hundred thirteen million, seven hundred twenty-eight thousand, eight hundred fifty".