191093 has 4 divisors (see below), whose sum is σ = 218400. Its totient is φ = 163788.

The previous prime is 191089. The next prime is 191099. The reversal of 191093 is 390191.

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 191093 - 2² = 191089 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191099) 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 in 3 ways as a sum of consecutive naturals, for example, 13643 + ... + 13656.

It is an arithmetic number, because the mean of its divisors is an integer number (54600).

2¹⁹¹⁰⁹³ is an apocalyptic number.

It is an amenable number.

191093 is a deficient number, since it is larger than the sum of its proper divisors (27307).

191093 is an equidigital number, since it uses as much as digits as its factorization.

191093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27306.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 191093 is about 437.1418534069. The cubic root of 191093 is about 57.5989976999.

The spelling of 191093 in words is "one hundred ninety-one thousand, ninety-three".