3855491911 has 2 divisors, whose sum is σ = 3855491912. Its totient is φ = 3855491910.

The previous prime is 3855491891. The next prime is 3855491947. The reversal of 3855491911 is 1191945583.

3855491911 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3855491911 - 2⁵ = 3855491879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3855491411) 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, 1927745955 + 1927745956.

It is an arithmetic number, because the mean of its divisors is an integer number (1927745956).

Almost surely, 2^3855491911 is an apocalyptic number.

3855491911 is a deficient number, since it is larger than the sum of its proper divisors (1).

3855491911 is an equidigital number, since it uses as much as digits as its factorization.

3855491911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 46.

The square root of 3855491911 is about 62092.6075390622. The cubic root of 3855491911 is about 1568.0500913244.

The spelling of 3855491911 in words is "three billion, eight hundred fifty-five million, four hundred ninety-one thousand, nine hundred eleven".