11716191 has 16 divisors (see below), whose sum is σ = 17428320. Its totient is φ = 7778880.

The previous prime is 11716189. The next prime is 11716231. The reversal of 11716191 is 19161711.

It is not a de Polignac number, because 11716191 - 2¹ = 11716189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11716121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7171 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (1089270).

Almost surely, 2^11716191 is an apocalyptic number.

11716191 is a deficient number, since it is larger than the sum of its proper divisors (5712129).

11716191 is a wasteful number, since it uses less digits than its factorization.

11716191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1777 counting only the distinct ones).

The product of its digits is 378, while the sum is 27.

The square root of 11716191 is about 3422.8921981272. The cubic root of 11716191 is about 227.1235395259.

The spelling of 11716191 in words is "eleven million, seven hundred sixteen thousand, one hundred ninety-one".