2944722681 has 20 divisors (see below), whose sum is σ = 4404996772. Its totient is φ = 1960430688.

The previous prime is 2944722667. The next prime is 2944722701. The reversal of 2944722681 is 1862274492.

It can be written as a sum of positive squares in 2 ways, for example, as 1582448400 + 1362274281 = 39780^2 + 36909^2 .

It is not a de Polignac number, because 2944722681 - 2¹¹ = 2944720633 is a prime.

It is a super-2 number, since 2×2944722681² = 17342783335991655522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2944722181) 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 19 ways as a sum of consecutive naturals, for example, 34575 + ... + 84171.

Almost surely, 2^2944722681 is an apocalyptic number.

It is an amenable number.

2944722681 is a deficient number, since it is larger than the sum of its proper divisors (1460274091).

2944722681 is an equidigital number, since it uses as much as digits as its factorization.

2944722681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50342 (or 50333 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 2944722681 is about 54265.2990501296. The cubic root of 2944722681 is about 1433.3364123905.

The spelling of 2944722681 in words is "two billion, nine hundred forty-four million, seven hundred twenty-two thousand, six hundred eighty-one".