189075823 has 4 divisors (see below), whose sum is σ = 189346248. Its totient is φ = 188805400.

The previous prime is 189075793. The next prime is 189075839. The reversal of 189075823 is 328570981.

189075823 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 an emirpimes, since its reverse is a distinct semiprime: 328570981 = 197 ⋅1667873.

It is a cyclic number.

It is not a de Polignac number, because 189075823 - 2⁹ = 189075311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189075823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189075223) 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, 134161 + ... + 135562.

It is an arithmetic number, because the mean of its divisors is an integer number (47336562).

Almost surely, 2^189075823 is an apocalyptic number.

189075823 is a deficient number, since it is larger than the sum of its proper divisors (270425).

189075823 is an equidigital number, since it uses as much as digits as its factorization.

189075823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270424.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 189075823 is about 13750.4844641925. The cubic root of 189075823 is about 573.9560875244.

The spelling of 189075823 in words is "one hundred eighty-nine million, seventy-five thousand, eight hundred twenty-three".