2156044244 has 12 divisors (see below), whose sum is σ = 3995023284. Its totient is φ = 1014609024.

The previous prime is 2156044211. The next prime is 2156044249. The reversal of 2156044244 is 4424406512.

It can be written as a sum of positive squares in 2 ways, for example, as 1358659600 + 797384644 = 36860^2 + 28238^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2156044244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156044249) 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 3 ways as a sum of consecutive naturals, for example, 15853199 + ... + 15853334.

It is an arithmetic number, because the mean of its divisors is an integer number (332918607).

Almost surely, 2^2156044244 is an apocalyptic number.

It is an amenable number.

2156044244 is a deficient number, since it is larger than the sum of its proper divisors (1838979040).

2156044244 is a wasteful number, since it uses less digits than its factorization.

2156044244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31706554 (or 31706552 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 2156044244 is about 46433.2234935289. The cubic root of 2156044244 is about 1291.8712190363.

The spelling of 2156044244 in words is "two billion, one hundred fifty-six million, forty-four thousand, two hundred forty-four".