2444163645 has 128 divisors (see below), whose sum is σ = 5164093440. Its totient is φ = 957358080.

The previous prime is 2444163643. The next prime is 2444163691. The reversal of 2444163645 is 5463614442.

It is not a de Polignac number, because 2444163645 - 2¹ = 2444163643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444163643) 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 in 127 ways as a sum of consecutive naturals, for example, 1439437 + ... + 1441133.

It is an arithmetic number, because the mean of its divisors is an integer number (40344480).

Almost surely, 2^2444163645 is an apocalyptic number.

It is an amenable number.

2444163645 is an abundant number, since it is smaller than the sum of its proper divisors (2719929795).

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

2444163645 is a wasteful number, since it uses less digits than its factorization.

2444163645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795.

The product of its digits is 276480, while the sum is 39.

The square root of 2444163645 is about 49438.4834415458. The cubic root of 2444163645 is about 1347.0284240828.

The spelling of 2444163645 in words is "two billion, four hundred forty-four million, one hundred sixty-three thousand, six hundred forty-five".