1313284643 has 16 divisors (see below), whose sum is σ = 1445299200. Its totient is φ = 1183416480.

The previous prime is 1313284639. The next prime is 1313284729. The reversal of 1313284643 is 3464823131.

It is a cyclic number.

It is not a de Polignac number, because 1313284643 - 2² = 1313284639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313284043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 911918 + ... + 913356.

It is an arithmetic number, because the mean of its divisors is an integer number (90331200).

Almost surely, 2^1313284643 is an apocalyptic number.

1313284643 is a deficient number, since it is larger than the sum of its proper divisors (132014557).

1313284643 is a wasteful number, since it uses less digits than its factorization.

1313284643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122.

The product of its digits is 41472, while the sum is 35.

The square root of 1313284643 is about 36239.2693496985. The cubic root of 1313284643 is about 1095.0979230345.

The spelling of 1313284643 in words is "one billion, three hundred thirteen million, two hundred eighty-four thousand, six hundred forty-three".