2044895821 has 8 divisors (see below), whose sum is σ = 2127232800. Its totient is φ = 1963347120.

The previous prime is 2044895819. The next prime is 2044895837. The reversal of 2044895821 is 1285984402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2044895821 - 2¹ = 2044895819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044895521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191775 + ... + 202156.

It is an arithmetic number, because the mean of its divisors is an integer number (265904100).

Almost surely, 2^2044895821 is an apocalyptic number.

It is an amenable number.

2044895821 is a deficient number, since it is larger than the sum of its proper divisors (82336979).

2044895821 is a wasteful number, since it uses less digits than its factorization.

2044895821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394139.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 2044895821 is about 45220.5243335369. The cubic root of 2044895821 is about 1269.2789055452.

The spelling of 2044895821 in words is "two billion, forty-four million, eight hundred ninety-five thousand, eight hundred twenty-one".