3911989853 has 2 divisors, whose sum is σ = 3911989854. Its totient is φ = 3911989852.

The previous prime is 3911989831. The next prime is 3911989859. The reversal of 3911989853 is 3589891193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2009459929 + 1902529924 = 44827^2 + 43618^2 .

It is a cyclic number.

It is not a de Polignac number, because 3911989853 - 2¹² = 3911985757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3911989859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1955994926 + 1955994927.

It is an arithmetic number, because the mean of its divisors is an integer number (1955994927).

Almost surely, 2^3911989853 is an apocalyptic number.

It is an amenable number.

3911989853 is a deficient number, since it is larger than the sum of its proper divisors (1).

3911989853 is an equidigital number, since it uses as much as digits as its factorization.

3911989853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 56.

The square root of 3911989853 is about 62545.9019680746. The cubic root of 3911989853 is about 1575.6723227562.

The spelling of 3911989853 in words is "three billion, nine hundred eleven million, nine hundred eighty-nine thousand, eight hundred fifty-three".