2164731913 has 2 divisors, whose sum is σ = 2164731914. Its totient is φ = 2164731912.

The previous prime is 2164731799. The next prime is 2164731971. The reversal of 2164731913 is 3191374612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2122260624 + 42471289 = 46068^2 + 6517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2164731913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2164731713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082365956 + 1082365957.

It is an arithmetic number, because the mean of its divisors is an integer number (1082365957).

Almost surely, 2^2164731913 is an apocalyptic number.

It is an amenable number.

2164731913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164731913 is an equidigital number, since it uses as much as digits as its factorization.

2164731913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 2164731913 is about 46526.6795827942. The cubic root of 2164731913 is about 1293.6040697717.

The spelling of 2164731913 in words is "two billion, one hundred sixty-four million, seven hundred thirty-one thousand, nine hundred thirteen".