191164 has 6 divisors (see below), whose sum is σ = 334544. Its totient is φ = 95580.

The previous prime is 191161. The next prime is 191173. The reversal of 191164 is 461191.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23892 + ... + 23899.

2¹⁹¹¹⁶⁴ is an apocalyptic number.

It is an amenable number.

191164 is a deficient number, since it is larger than the sum of its proper divisors (143380).

191164 is a wasteful number, since it uses less digits than its factorization.

191164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47795 (or 47793 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

The square root of 191164 is about 437.2230552018. The cubic root of 191164 is about 57.6061303918.

The spelling of 191164 in words is "one hundred ninety-one thousand, one hundred sixty-four".