2445563646 has 12 divisors (see below), whose sum is σ = 5298721272. Its totient is φ = 815187876.

The previous prime is 2445563641. The next prime is 2445563669. The reversal of 2445563646 is 6463655442.

It is a happy number.

2445563646 is a `hidden beast` number, since 2 + 4 + 4 + 5 + 5 + 636 + 4 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445563641) 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 5 ways as a sum of consecutive naturals, for example, 67932306 + ... + 67932341.

It is an arithmetic number, because the mean of its divisors is an integer number (441560106).

Almost surely, 2^2445563646 is an apocalyptic number.

2445563646 is an abundant number, since it is smaller than the sum of its proper divisors (2853157626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2445563646 is a wasteful number, since it uses less digits than its factorization.

2445563646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135864655 (or 135864652 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The square root of 2445563646 is about 49452.6404350668. The cubic root of 2445563646 is about 1347.2855646925.

The spelling of 2445563646 in words is "two billion, four hundred forty-five million, five hundred sixty-three thousand, six hundred forty-six".