191434 has 4 divisors (see below), whose sum is σ = 287154. Its totient is φ = 95716.

The previous prime is 191413. The next prime is 191441. The reversal of 191434 is 434191.

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

It can be written as a sum of positive squares in only one way, i.e., 189225 + 2209 = 435^2 + 47^2 .

It is an unprimeable number.

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, 47857 + ... + 47860.

2¹⁹¹⁴³⁴ is an apocalyptic number.

191434 is a deficient number, since it is larger than the sum of its proper divisors (95720).

191434 is an equidigital number, since it uses as much as digits as its factorization.

191434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95719.

The product of its digits is 432, while the sum is 22.

The square root of 191434 is about 437.5317131363. The cubic root of 191434 is about 57.6332385960.

It can be divided in two parts, 191 and 434, that added together give a 4-th power (625 = 5⁴).

The spelling of 191434 in words is "one hundred ninety-one thousand, four hundred thirty-four".