189322809 has 8 divisors (see below), whose sum is σ = 271848192. Its totient is φ = 116506320.

The previous prime is 189322807. The next prime is 189322823. The reversal of 189322809 is 908223981.

189322809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189322809 - 2¹ = 189322807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189322807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2427177 + ... + 2427254.

It is an arithmetic number, because the mean of its divisors is an integer number (33981024).

Almost surely, 2^189322809 is an apocalyptic number.

It is an amenable number.

189322809 is a deficient number, since it is larger than the sum of its proper divisors (82525383).

189322809 is a wasteful number, since it uses less digits than its factorization.

189322809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4854447.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 189322809 is about 13759.4625258402. The cubic root of 189322809 is about 574.2058946036.

The spelling of 189322809 in words is "one hundred eighty-nine million, three hundred twenty-two thousand, eight hundred nine".