2164249057 has 2 divisors, whose sum is σ = 2164249058. Its totient is φ = 2164249056.

The previous prime is 2164249019. The next prime is 2164249069. The reversal of 2164249057 is 7509424612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2040238561 + 124010496 = 45169^2 + 11136^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164249057 - 2¹¹ = 2164247009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2164249007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082124528 + 1082124529.

It is an arithmetic number, because the mean of its divisors is an integer number (1082124529).

Almost surely, 2^2164249057 is an apocalyptic number.

It is an amenable number.

2164249057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164249057 is an equidigital number, since it uses as much as digits as its factorization.

2164249057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 2164249057 is about 46521.4902706265. The cubic root of 2164249057 is about 1293.5078806577.

The spelling of 2164249057 in words is "two billion, one hundred sixty-four million, two hundred forty-nine thousand, fifty-seven".