1313782565 has 16 divisors (see below), whose sum is σ = 1601873280. Its totient is φ = 1034172480.

The previous prime is 1313782553. The next prime is 1313782567. The reversal of 1313782565 is 5652873131.

It is not a de Polignac number, because 1313782565 - 2⁶ = 1313782501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313782567) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 410120 + ... + 413310.

It is an arithmetic number, because the mean of its divisors is an integer number (100117080).

Almost surely, 2^1313782565 is an apocalyptic number.

It is an amenable number.

1313782565 is a deficient number, since it is larger than the sum of its proper divisors (288090715).

1313782565 is a wasteful number, since it uses less digits than its factorization.

1313782565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492.

The product of its digits is 151200, while the sum is 41.

The square root of 1313782565 is about 36246.1386219277. The cubic root of 1313782565 is about 1095.2363049290.

The spelling of 1313782565 in words is "one billion, three hundred thirteen million, seven hundred eighty-two thousand, five hundred sixty-five".