191116793 has 4 divisors (see below), whose sum is σ = 218419200. Its totient is φ = 163814388.

The previous prime is 191116789. The next prime is 191116823. The reversal of 191116793 is 397611191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 191116793 - 2² = 191116789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (191116493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13651193 + ... + 13651206.

It is an arithmetic number, because the mean of its divisors is an integer number (54604800).

Almost surely, 2^191116793 is an apocalyptic number.

It is an amenable number.

191116793 is a deficient number, since it is larger than the sum of its proper divisors (27302407).

191116793 is an equidigital number, since it uses as much as digits as its factorization.

191116793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27302406.

The product of its digits is 10206, while the sum is 38.

The square root of 191116793 is about 13824.4997377844. The cubic root of 191116793 is about 576.0138815215.

The spelling of 191116793 in words is "one hundred ninety-one million, one hundred sixteen thousand, seven hundred ninety-three".