190039189 has 4 divisors (see below), whose sum is σ = 194082624. Its totient is φ = 185995756.

The previous prime is 190039183. The next prime is 190039247. The reversal of 190039189 is 981930091.

190039189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 190039189 - 2⁹ = 190038677 is a prime.

It is a super-2 number, since 2×190039189² = 72229786711555442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190039183) 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, 2021647 + ... + 2021740.

It is an arithmetic number, because the mean of its divisors is an integer number (48520656).

Almost surely, 2^190039189 is an apocalyptic number.

It is an amenable number.

190039189 is a deficient number, since it is larger than the sum of its proper divisors (4043435).

190039189 is an equidigital number, since it uses as much as digits as its factorization.

190039189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043434.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 190039189 is about 13785.4702132354. The cubic root of 190039189 is about 574.9292303576.

The spelling of 190039189 in words is "one hundred ninety million, thirty-nine thousand, one hundred eighty-nine".