1313557842 has 32 divisors (see below), whose sum is σ = 2723817600. Its totient is φ = 421803648.

The previous prime is 1313557811. The next prime is 1313557859. The reversal of 1313557842 is 2487553131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313557842.

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, 71259 + ... + 87777.

It is an arithmetic number, because the mean of its divisors is an integer number (85119300).

Almost surely, 2^1313557842 is an apocalyptic number.

1313557842 is an abundant number, since it is smaller than the sum of its proper divisors (1410259758).

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

1313557842 is a wasteful number, since it uses less digits than its factorization.

1313557842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17010.

The product of its digits is 100800, while the sum is 39.

The square root of 1313557842 is about 36243.0385315580. The cubic root of 1313557842 is about 1095.1738545080.

The spelling of 1313557842 in words is "one billion, three hundred thirteen million, five hundred fifty-seven thousand, eight hundred forty-two".