2044866564 has 144 divisors (see below), whose sum is σ = 5971492800. Its totient is φ = 584692992.

The previous prime is 2044866559. The next prime is 2044866587. The reversal of 2044866564 is 4656684402.

2044866564 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 86 + 6 + 564 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 469107 + ... + 473445.

It is an arithmetic number, because the mean of its divisors is an integer number (41468700).

Almost surely, 2^2044866564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2044866564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2985746400).

2044866564 is an abundant number, since it is smaller than the sum of its proper divisors (3926626236).

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

2044866564 is a wasteful number, since it uses less digits than its factorization.

2044866564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 2044866564 is about 45220.2008398901. The cubic root of 2044866564 is about 1269.2728521855.

The spelling of 2044866564 in words is "two billion, forty-four million, eight hundred sixty-six thousand, five hundred sixty-four".