2243665445 has 32 divisors (see below), whose sum is σ = 3242618880. Its totient is φ = 1455900480.

The previous prime is 2243665441. The next prime is 2243665447. The reversal of 2243665445 is 5445663422.

It is not a de Polignac number, because 2243665445 - 2² = 2243665441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243665441) 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 in 31 ways as a sum of consecutive naturals, for example, 945110 + ... + 947480.

It is an arithmetic number, because the mean of its divisors is an integer number (101331840).

Almost surely, 2^2243665445 is an apocalyptic number.

It is an amenable number.

2243665445 is a deficient number, since it is larger than the sum of its proper divisors (998953435).

2243665445 is a wasteful number, since it uses less digits than its factorization.

2243665445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825.

The product of its digits is 691200, while the sum is 41.

The square root of 2243665445 is about 47367.3457668888. The cubic root of 2243665445 is about 1309.1398204834.

The spelling of 2243665445 in words is "two billion, two hundred forty-three million, six hundred sixty-five thousand, four hundred forty-five".