190189 has 4 divisors (see below), whose sum is σ = 194656. Its totient is φ = 185724.

The previous prime is 190181. The next prime is 190207. The reversal of 190189 is 981091.

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 190189 - 2³ = 190181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2169 + ... + 2254.

It is an arithmetic number, because the mean of its divisors is an integer number (48664).

2¹⁹⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

190189 is a deficient number, since it is larger than the sum of its proper divisors (4467).

190189 is an equidigital number, since it uses as much as digits as its factorization.

190189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 190189 is about 436.1066383352. The cubic root of 190189 is about 57.5080266048.

The spelling of 190189 in words is "one hundred ninety thousand, one hundred eighty-nine".