1361313565 has 8 divisors (see below), whose sum is σ = 1671566688. Its totient is φ = 1063723920.

The previous prime is 1361313557. The next prime is 1361313589. The reversal of 1361313565 is 5653131631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1361313565 - 2³ = 1361313557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361313565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3165631 + ... + 3166060.

It is an arithmetic number, because the mean of its divisors is an integer number (208945836).

Almost surely, 2^1361313565 is an apocalyptic number.

It is an amenable number.

1361313565 is a deficient number, since it is larger than the sum of its proper divisors (310253123).

1361313565 is an equidigital number, since it uses as much as digits as its factorization.

1361313565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331739.

The product of its digits is 24300, while the sum is 34.

The square root of 1361313565 is about 36895.9830469389. The cubic root of 1361313565 is about 1108.2882376109.

The spelling of 1361313565 in words is "one billion, three hundred sixty-one million, three hundred thirteen thousand, five hundred sixty-five".