2044005663 has 16 divisors (see below), whose sum is σ = 3117519360. Its totient is φ = 1166936736.

The previous prime is 2044005641. The next prime is 2044005683. The reversal of 2044005663 is 3665004402.

It is not a de Polignac number, because 2044005663 - 2¹² = 2044001567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2044005663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044005683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20595 + ... + 67172.

It is an arithmetic number, because the mean of its divisors is an integer number (194844960).

Almost surely, 2^2044005663 is an apocalyptic number.

2044005663 is a deficient number, since it is larger than the sum of its proper divisors (1073513697).

2044005663 is a wasteful number, since it uses less digits than its factorization.

2044005663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88886.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 2044005663 is about 45210.6808508786. The cubic root of 2044005663 is about 1269.0947033730.

The spelling of 2044005663 in words is "two billion, forty-four million, five thousand, six hundred sixty-three".