2164517249 has 2 divisors, whose sum is σ = 2164517250. Its totient is φ = 2164517248.

The previous prime is 2164517219. The next prime is 2164517317. The reversal of 2164517249 is 9427154612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1499238400 + 665278849 = 38720^2 + 25793^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164517249 - 2²⁸ = 1896081793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2164517219) 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, 1082258624 + 1082258625.

It is an arithmetic number, because the mean of its divisors is an integer number (1082258625).

Almost surely, 2^2164517249 is an apocalyptic number.

It is an amenable number.

2164517249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164517249 is an equidigital number, since it uses as much as digits as its factorization.

2164517249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 2164517249 is about 46524.3726341366. The cubic root of 2164517249 is about 1293.5613086024.

The spelling of 2164517249 in words is "two billion, one hundred sixty-four million, five hundred seventeen thousand, two hundred forty-nine".