4044738981 has 32 divisors (see below), whose sum is σ = 5870510080. Its totient is φ = 2467713600.

The previous prime is 4044738979. The next prime is 4044739003. The reversal of 4044738981 is 1898374404.

4044738981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4044738981 - 2¹ = 4044738979 is a prime.

It is a super-2 number, since 2×4044738981² = 32719826848841836722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4044738981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044738931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1166256 + ... + 1169718.

It is an arithmetic number, because the mean of its divisors is an integer number (183453440).

Almost surely, 2^4044738981 is an apocalyptic number.

It is an amenable number.

4044738981 is a deficient number, since it is larger than the sum of its proper divisors (1825771099).

4044738981 is a wasteful number, since it uses less digits than its factorization.

4044738981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177.

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 4044738981 is about 63598.2624055092. The cubic root of 4044738981 is about 1593.2973489021.

The spelling of 4044738981 in words is "four billion, forty-four million, seven hundred thirty-eight thousand, nine hundred eighty-one".