1313856550 has 12 divisors (see below), whose sum is σ = 2443773276. Its totient is φ = 525542600.

The previous prime is 1313856499. The next prime is 1313856563. The reversal of 1313856550 is 556583131.

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 5 ways as a sum of consecutive naturals, for example, 13138516 + ... + 13138615.

It is an arithmetic number, because the mean of its divisors is an integer number (203647773).

Almost surely, 2^1313856550 is an apocalyptic number.

1313856550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313856550 is a deficient number, since it is larger than the sum of its proper divisors (1129916726).

1313856550 is a wasteful number, since it uses less digits than its factorization.

1313856550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26277143 (or 26277138 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 1313856550 is about 36247.1591990324. The cubic root of 1313856550 is about 1095.2568637690.

The spelling of 1313856550 in words is "one billion, three hundred thirteen million, eight hundred fifty-six thousand, five hundred fifty".