191116371 has 4 divisors (see below), whose sum is σ = 254821832. Its totient is φ = 127410912.

The previous prime is 191116369. The next prime is 191116379. The reversal of 191116371 is 173611191.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 191116371 - 2¹ = 191116369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191116379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31852726 + ... + 31852731.

It is an arithmetic number, because the mean of its divisors is an integer number (63705458).

Almost surely, 2^191116371 is an apocalyptic number.

191116371 is a deficient number, since it is larger than the sum of its proper divisors (63705461).

191116371 is an equidigital number, since it uses as much as digits as its factorization.

191116371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63705460.

The product of its digits is 1134, while the sum is 30.

The square root of 191116371 is about 13824.4844750175. The cubic root of 191116371 is about 576.0134575608.

The spelling of 191116371 in words is "one hundred ninety-one million, one hundred sixteen thousand, three hundred seventy-one".