191116411 has 2 divisors, whose sum is σ = 191116412. Its totient is φ = 191116410.

The previous prime is 191116391. The next prime is 191116417. The reversal of 191116411 is 114611191.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191116411 - 2⁵ = 191116379 is a prime.

It is not a weakly prime, because it can be changed into another prime (191116417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95558205 + 95558206.

It is an arithmetic number, because the mean of its divisors is an integer number (95558206).

Almost surely, 2^191116411 is an apocalyptic number.

191116411 is a deficient number, since it is larger than the sum of its proper divisors (1).

191116411 is an equidigital number, since it uses as much as digits as its factorization.

191116411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 25.

The square root of 191116411 is about 13824.4859217260. The cubic root of 191116411 is about 576.0134977466.

The spelling of 191116411 in words is "one hundred ninety-one million, one hundred sixteen thousand, four hundred eleven".