4245665441 has 2 divisors, whose sum is σ = 4245665442. Its totient is φ = 4245665440.

The previous prime is 4245665399. The next prime is 4245665471. The reversal of 4245665441 is 1445665424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044451216 + 201214225 = 63596^2 + 14185^2 .

It is a cyclic number.

It is not a de Polignac number, because 4245665441 - 2⁶ = 4245665377 is a prime.

It is not a weakly prime, because it can be changed into another prime (4245665471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122832720 + 2122832721.

It is an arithmetic number, because the mean of its divisors is an integer number (2122832721).

Almost surely, 2^4245665441 is an apocalyptic number.

It is an amenable number.

4245665441 is a deficient number, since it is larger than the sum of its proper divisors (1).

4245665441 is an equidigital number, since it uses as much as digits as its factorization.

4245665441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 41.

The square root of 4245665441 is about 65158.7710212524. The cubic root of 4245665441 is about 1619.2550353411.

The spelling of 4245665441 in words is "four billion, two hundred forty-five million, six hundred sixty-five thousand, four hundred forty-one".