1313780365 has 8 divisors (see below), whose sum is σ = 1659512160. Its totient is φ = 995707152.

The previous prime is 1313780339. The next prime is 1313780399. The reversal of 1313780365 is 5630873131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1313780365 - 2⁹ = 1313779853 is a prime.

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, 6914539 + ... + 6914728.

It is an arithmetic number, because the mean of its divisors is an integer number (207439020).

Almost surely, 2^1313780365 is an apocalyptic number.

It is an amenable number.

1313780365 is a deficient number, since it is larger than the sum of its proper divisors (345731795).

1313780365 is a wasteful number, since it uses less digits than its factorization.

1313780365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13829291.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1313780365 is about 36246.1082738547. The cubic root of 1313780365 is about 1095.2356935845.

The spelling of 1313780365 in words is "one billion, three hundred thirteen million, seven hundred eighty thousand, three hundred sixty-five".