189168227 has 4 divisors (see below), whose sum is σ = 189337800. Its totient is φ = 188998656.

The previous prime is 189168193. The next prime is 189168241. The reversal of 189168227 is 722861981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722861981 = 17 ⋅42521293.

It is a cyclic number.

It is not a de Polignac number, because 189168227 - 2¹⁸ = 188906083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189162227) 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, 83102 + ... + 85347.

It is an arithmetic number, because the mean of its divisors is an integer number (47334450).

Almost surely, 2^189168227 is an apocalyptic number.

189168227 is a deficient number, since it is larger than the sum of its proper divisors (169573).

189168227 is a wasteful number, since it uses less digits than its factorization.

189168227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169572.

The product of its digits is 96768, while the sum is 44.

The square root of 189168227 is about 13753.8440808379. The cubic root of 189168227 is about 574.0495724202.

The spelling of 189168227 in words is "one hundred eighty-nine million, one hundred sixty-eight thousand, two hundred twenty-seven".