1965323313 has 12 divisors (see below), whose sum is σ = 2843409348. Its totient is φ = 1308088320.

The previous prime is 1965323287. The next prime is 1965323357. The reversal of 1965323313 is 3133235691.

1965323313 is a `hidden beast` number, since 1 + 96 + 532 + 3 + 31 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 248629824 + 1716693489 = 15768^2 + 41433^2 .

It is not a de Polignac number, because 1965323313 - 2⁵ = 1965323281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1965323383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171408 + ... + 182513.

It is an arithmetic number, because the mean of its divisors is an integer number (236950779).

Almost surely, 2^1965323313 is an apocalyptic number.

It is an amenable number.

1965323313 is a deficient number, since it is larger than the sum of its proper divisors (878086035).

1965323313 is a wasteful number, since it uses less digits than its factorization.

1965323313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354544 (or 354541 counting only the distinct ones).

The product of its digits is 43740, while the sum is 36.

The square root of 1965323313 is about 44331.9671681734. The cubic root of 1965323313 is about 1252.5969078927.

The spelling of 1965323313 in words is "one billion, nine hundred sixty-five million, three hundred twenty-three thousand, three hundred thirteen".