11910191 has 2 divisors, whose sum is σ = 11910192. Its totient is φ = 11910190.

The previous prime is 11910167. The next prime is 11910193. The reversal of 11910191 is 19101911.

It is a happy number.

11910191 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 11910191 - 2¹⁰ = 11909167 is a prime.

Together with 11910193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11910193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5955095 + 5955096.

It is an arithmetic number, because the mean of its divisors is an integer number (5955096).

Almost surely, 2^11910191 is an apocalyptic number.

11910191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11910191 is an equidigital number, since it uses as much as digits as its factorization.

11910191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 23.

The square root of 11910191 is about 3451.1144576789. The cubic root of 11910191 is about 228.3702752786.

The spelling of 11910191 in words is "eleven million, nine hundred ten thousand, one hundred ninety-one".