1316664565 has 16 divisors (see below), whose sum is σ = 1690427520. Its totient is φ = 981529920.

The previous prime is 1316664563. The next prime is 1316664577. The reversal of 1316664565 is 5654666131.

It is not a de Polignac number, because 1316664565 - 2¹ = 1316664563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316664563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107809 + ... + 119398.

It is an arithmetic number, because the mean of its divisors is an integer number (105651720).

Almost surely, 2^1316664565 is an apocalyptic number.

It is an amenable number.

1316664565 is a deficient number, since it is larger than the sum of its proper divisors (373762955).

1316664565 is a wasteful number, since it uses less digits than its factorization.

1316664565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227292.

The product of its digits is 388800, while the sum is 43.

The square root of 1316664565 is about 36285.8728019597. The cubic root of 1316664565 is about 1096.0365808758.

The spelling of 1316664565 in words is "one billion, three hundred sixteen million, six hundred sixty-four thousand, five hundred sixty-five".