189834193 has 4 divisors (see below), whose sum is σ = 190044400. Its totient is φ = 189623988.

The previous prime is 189834179. The next prime is 189834199. The reversal of 189834193 is 391438981.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 391438981 = 59 ⋅6634559.

It is a cyclic number.

It is not a de Polignac number, because 189834193 - 2¹⁷ = 189703121 is a prime.

It is a super-2 number, since 2×189834193² = 72074041663922498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189834199) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 103743 + ... + 105556.

It is an arithmetic number, because the mean of its divisors is an integer number (47511100).

Almost surely, 2^189834193 is an apocalyptic number.

It is an amenable number.

189834193 is a deficient number, since it is larger than the sum of its proper divisors (210207).

189834193 is an equidigital number, since it uses as much as digits as its factorization.

189834193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210206.

The product of its digits is 186624, while the sum is 46.

The square root of 189834193 is about 13778.0329873317. The cubic root of 189834193 is about 574.7224298611.

The spelling of 189834193 in words is "one hundred eighty-nine million, eight hundred thirty-four thousand, one hundred ninety-three".