2165050313 has 2 divisors, whose sum is σ = 2165050314. Its totient is φ = 2165050312.

The previous prime is 2165050289. The next prime is 2165050343. The reversal of 2165050313 is 3130505612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1769716624 + 395333689 = 42068^2 + 19883^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165050313 - 2¹⁶ = 2164984777 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165050343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082525156 + 1082525157.

It is an arithmetic number, because the mean of its divisors is an integer number (1082525157).

Almost surely, 2^2165050313 is an apocalyptic number.

It is an amenable number.

2165050313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165050313 is an equidigital number, since it uses as much as digits as its factorization.

2165050313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 2165050313 is about 46530.1011496859. The cubic root of 2165050313 is about 1293.6674899950.

Adding to 2165050313 its reverse (3130505612), we get a palindrome (5295555925).

The spelling of 2165050313 in words is "two billion, one hundred sixty-five million, fifty thousand, three hundred thirteen".