191166 has 16 divisors (see below), whose sum is σ = 386688. Its totient is φ = 63000.

The previous prime is 191161. The next prime is 191173. The reversal of 191166 is 661191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801 + ... + 1011.

It is an arithmetic number, because the mean of its divisors is an integer number (24168).

2¹⁹¹¹⁶⁶ is an apocalyptic number.

191166 is an abundant number, since it is smaller than the sum of its proper divisors (195522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191166 is a wasteful number, since it uses less digits than its factorization.

191166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367.

The product of its digits is 324, while the sum is 24.

The square root of 191166 is about 437.2253423579. The cubic root of 191166 is about 57.6063312871.

The spelling of 191166 in words is "one hundred ninety-one thousand, one hundred sixty-six".