189938227 has 2 divisors, whose sum is σ = 189938228. Its totient is φ = 189938226.

The previous prime is 189938213. The next prime is 189938249. The reversal of 189938227 is 722839981.

189938227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (722839981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189938227 is a prime.

It is not a weakly prime, because it can be changed into another prime (189938207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94969113 + 94969114.

It is an arithmetic number, because the mean of its divisors is an integer number (94969114).

Almost surely, 2^189938227 is an apocalyptic number.

189938227 is a deficient number, since it is larger than the sum of its proper divisors (1).

189938227 is an equidigital number, since it uses as much as digits as its factorization.

189938227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The square root of 189938227 is about 13781.8078277126. The cubic root of 189938227 is about 574.8273982256.

The spelling of 189938227 in words is "one hundred eighty-nine million, nine hundred thirty-eight thousand, two hundred twenty-seven".