2049822721 has 16 divisors (see below), whose sum is σ = 2165514624. Its totient is φ = 1936433664.

The previous prime is 2049822683. The next prime is 2049822737. The reversal of 2049822721 is 1272289402.

It is not a de Polignac number, because 2049822721 - 2¹¹ = 2049820673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2049822791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2023011 + ... + 2024023.

It is an arithmetic number, because the mean of its divisors is an integer number (135344664).

Almost surely, 2^2049822721 is an apocalyptic number.

It is an amenable number.

2049822721 is a deficient number, since it is larger than the sum of its proper divisors (115691903).

2049822721 is a wasteful number, since it uses less digits than its factorization.

2049822721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2049822721 is about 45274.9679293095. The cubic root of 2049822721 is about 1270.2974732522.

The spelling of 2049822721 in words is "two billion, forty-nine million, eight hundred twenty-two thousand, seven hundred twenty-one".