191894 has 4 divisors (see below), whose sum is σ = 287844. Its totient is φ = 95946.

The previous prime is 191861. The next prime is 191899. The reversal of 191894 is 498191.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 191894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191899) 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, 47972 + ... + 47975.

It is an arithmetic number, because the mean of its divisors is an integer number (71961).

2¹⁹¹⁸⁹⁴ is an apocalyptic number.

191894 is a deficient number, since it is larger than the sum of its proper divisors (95950).

191894 is an equidigital number, since it uses as much as digits as its factorization.

191894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95949.

The product of its digits is 2592, while the sum is 32.

The square root of 191894 is about 438.0570739070. The cubic root of 191894 is about 57.6793642986.

The spelling of 191894 in words is "one hundred ninety-one thousand, eight hundred ninety-four".