2265944509 has 2 divisors, whose sum is σ = 2265944510. Its totient is φ = 2265944508.

The previous prime is 2265944479. The next prime is 2265944519. The reversal of 2265944509 is 9054495622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2150918884 + 115025625 = 46378^2 + 10725^2 .

It is a cyclic number.

It is not a de Polignac number, because 2265944509 - 2¹⁵ = 2265911741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2265944519) 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, 1132972254 + 1132972255.

It is an arithmetic number, because the mean of its divisors is an integer number (1132972255).

Almost surely, 2^2265944509 is an apocalyptic number.

It is an amenable number.

2265944509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265944509 is an equidigital number, since it uses as much as digits as its factorization.

2265944509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 2265944509 is about 47601.9380802925. The cubic root of 2265944509 is about 1313.4587056757.

The spelling of 2265944509 in words is "two billion, two hundred sixty-five million, nine hundred forty-four thousand, five hundred nine".