4041539981 has 2 divisors, whose sum is σ = 4041539982. Its totient is φ = 4041539980.

The previous prime is 4041539939. The next prime is 4041540023. The reversal of 4041539981 is 1899351404.

It is a balanced prime because it is at equal distance from previous prime (4041539939) and next prime (4041540023).

It can be written as a sum of positive squares in only one way, i.e., 4031107081 + 10432900 = 63491^2 + 3230^2 .

It is a cyclic number.

It is not a de Polignac number, because 4041539981 - 2¹⁸ = 4041277837 is a prime.

It is a super-2 number, since 2×4041539981² = 32668090836042960722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4041539911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020769990 + 2020769991.

It is an arithmetic number, because the mean of its divisors is an integer number (2020769991).

Almost surely, 2^4041539981 is an apocalyptic number.

It is an amenable number.

4041539981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4041539981 is an equidigital number, since it uses as much as digits as its factorization.

4041539981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 4041539981 is about 63573.1073725361. The cubic root of 4041539981 is about 1592.8771897300.

The spelling of 4041539981 in words is "four billion, forty-one million, five hundred thirty-nine thousand, nine hundred eighty-one".