189107227 has 4 divisors (see below), whose sum is σ = 189919080. Its totient is φ = 188295376.

The previous prime is 189107207. The next prime is 189107239. The reversal of 189107227 is 722701981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722701981 = 3769 ⋅191749.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189107227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189107207) 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, 405577 + ... + 406042.

It is an arithmetic number, because the mean of its divisors is an integer number (47479770).

Almost surely, 2^189107227 is an apocalyptic number.

189107227 is a deficient number, since it is larger than the sum of its proper divisors (811853).

189107227 is an equidigital number, since it uses as much as digits as its factorization.

189107227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811852.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 189107227 is about 13751.6263401825. The cubic root of 189107227 is about 573.9878622887.

It can be divided in two parts, 189 and 107227, that added together give a triangular number (107416 = T₄₆₃).

The spelling of 189107227 in words is "one hundred eighty-nine million, one hundred seven thousand, two hundred twenty-seven".