2165296901 has 2 divisors, whose sum is σ = 2165296902. Its totient is φ = 2165296900.

The previous prime is 2165296877. The next prime is 2165296933. The reversal of 2165296901 is 1096925612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2161785025 + 3511876 = 46495^2 + 1874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165296901 - 2¹⁸ = 2165034757 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165296801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082648450 + 1082648451.

It is an arithmetic number, because the mean of its divisors is an integer number (1082648451).

Almost surely, 2^2165296901 is an apocalyptic number.

It is an amenable number.

2165296901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165296901 is an equidigital number, since it uses as much as digits as its factorization.

2165296901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 2165296901 is about 46532.7508428204. The cubic root of 2165296901 is about 1293.7166021360.

The spelling of 2165296901 in words is "two billion, one hundred sixty-five million, two hundred ninety-six thousand, nine hundred one".