4091381191 has 2 divisors, whose sum is σ = 4091381192. Its totient is φ = 4091381190.

The previous prime is 4091381159. The next prime is 4091381213. The reversal of 4091381191 is 1911831904.

4091381191 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 4091381191 - 2⁵ = 4091381159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4091381191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4091381101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045690595 + 2045690596.

It is an arithmetic number, because the mean of its divisors is an integer number (2045690596).

Almost surely, 2^4091381191 is an apocalyptic number.

4091381191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4091381191 is an equidigital number, since it uses as much as digits as its factorization.

4091381191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 4091381191 is about 63963.9053763918. The cubic root of 4091381191 is about 1599.3983663796.

The spelling of 4091381191 in words is "four billion, ninety-one million, three hundred eighty-one thousand, one hundred ninety-one".