2165953099 has 2 divisors, whose sum is σ = 2165953100. Its totient is φ = 2165953098.

The previous prime is 2165953063. The next prime is 2165953121. The reversal of 2165953099 is 9903595612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2165953099 - 2⁹ = 2165952587 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165953199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082976549 + 1082976550.

It is an arithmetic number, because the mean of its divisors is an integer number (1082976550).

Almost surely, 2^2165953099 is an apocalyptic number.

2165953099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165953099 is an equidigital number, since it uses as much as digits as its factorization.

2165953099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 656100, while the sum is 49.

The square root of 2165953099 is about 46539.8012350719. The cubic root of 2165953099 is about 1293.8472768260.

The spelling of 2165953099 in words is "two billion, one hundred sixty-five million, nine hundred fifty-three thousand, ninety-nine".