4013805391 has 2 divisors, whose sum is σ = 4013805392. Its totient is φ = 4013805390.

The previous prime is 4013805379. The next prime is 4013805401. The reversal of 4013805391 is 1935083104.

4013805391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4013805391 - 2¹⁷ = 4013674319 is a prime.

It is a super-2 number, since 2×4013805391² = 32221267433641325762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4013875391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006902695 + 2006902696.

It is an arithmetic number, because the mean of its divisors is an integer number (2006902696).

Almost surely, 2^4013805391 is an apocalyptic number.

4013805391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4013805391 is an equidigital number, since it uses as much as digits as its factorization.

4013805391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 4013805391 is about 63354.6003933416. The cubic root of 4013805391 is about 1589.2251793587.

Adding to 4013805391 its reverse (1935083104), we get a palindrome (5948888495).

The spelling of 4013805391 in words is "four billion, thirteen million, eight hundred five thousand, three hundred ninety-one".