4049594981 has 12 divisors (see below), whose sum is σ = 4347754572. Its totient is φ = 3768817536.

The previous prime is 4049594959. The next prime is 4049595019. The reversal of 4049594981 is 1894959404.

It can be written as a sum of positive squares in 2 ways, for example, as 2595393025 + 1454201956 = 50945^2 + 38134^2 .

It is not a de Polignac number, because 4049594981 - 2¹⁴ = 4049578597 is a prime.

It is a super-2 number, since 2×4049594981² = 32798439020280780722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4049594951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83876 + ... + 123021.

It is an arithmetic number, because the mean of its divisors is an integer number (362312881).

Almost surely, 2^4049594981 is an apocalyptic number.

It is an amenable number.

4049594981 is a deficient number, since it is larger than the sum of its proper divisors (298159591).

4049594981 is a wasteful number, since it uses less digits than its factorization.

4049594981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206980 (or 206957 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 4049594981 is about 63636.4280974349. The cubic root of 4049594981 is about 1593.9347165814.

The spelling of 4049594981 in words is "four billion, forty-nine million, five hundred ninety-four thousand, nine hundred eighty-one".