191934 has 12 divisors (see below), whose sum is σ = 415896. Its totient is φ = 63972.

The previous prime is 191929. The next prime is 191953. The reversal of 191934 is 439191.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 191898 and 191907.

It is a congruent number.

It is an unprimeable number.

191934 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5314 + ... + 5349.

It is an arithmetic number, because the mean of its divisors is an integer number (34658).

2¹⁹¹⁹³⁴ is an apocalyptic number.

191934 is an abundant number, since it is smaller than the sum of its proper divisors (223962).

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

191934 is a wasteful number, since it uses less digits than its factorization.

191934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10671 (or 10668 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 191934 is about 438.1027276793. The cubic root of 191934 is about 57.6833717442.

It can be divided in two parts, 1919 and 34, that added together give a triangular number (1953 = T₆₂).

The spelling of 191934 in words is "one hundred ninety-one thousand, nine hundred thirty-four".