4081013 has 2 divisors, whose sum is σ = 4081014. Its totient is φ = 4081012.

The previous prime is 4080997. The next prime is 4081019. The reversal of 4081013 is 3101804.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3452164 + 628849 = 1858^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 4081013 - 2⁴ = 4080997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4080982 and 4081000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4081019) 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 as a sum of consecutive naturals, namely, 2040506 + 2040507.

It is an arithmetic number, because the mean of its divisors is an integer number (2040507).

Almost surely, 2^4081013 is an apocalyptic number.

It is an amenable number.

4081013 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081013 is an equidigital number, since it uses as much as digits as its factorization.

4081013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 4081013 is about 2020.1517269750. The cubic root of 4081013 is about 159.8046182803.

Adding to 4081013 its reverse (3101804), we get a palindrome (7182817).

The spelling of 4081013 in words is "four million, eighty-one thousand, thirteen".