2245406644 has 24 divisors (see below), whose sum is σ = 4294894688. Its totient is φ = 1020872160.

The previous prime is 2245406641. The next prime is 2245406677. The reversal of 2245406644 is 4466045422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245406641) 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 7 ways as a sum of consecutive naturals, for example, 318762 + ... + 325729.

Almost surely, 2^2245406644 is an apocalyptic number.

It is an amenable number.

2245406644 is a deficient number, since it is larger than the sum of its proper divisors (2049488044).

2245406644 is a wasteful number, since it uses less digits than its factorization.

2245406644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644575 (or 644573 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

The square root of 2245406644 is about 47385.7219423742. The cubic root of 2245406644 is about 1309.4783860426.

The spelling of 2245406644 in words is "two billion, two hundred forty-five million, four hundred six thousand, six hundred forty-four".