189678227 has 2 divisors, whose sum is σ = 189678228. Its totient is φ = 189678226.

The previous prime is 189678199. The next prime is 189678257. The reversal of 189678227 is 722876981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189678227 - 2¹⁶ = 189612691 is a prime.

It is not a weakly prime, because it can be changed into another prime (189678257) 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 as a sum of consecutive naturals, namely, 94839113 + 94839114.

It is an arithmetic number, because the mean of its divisors is an integer number (94839114).

Almost surely, 2^189678227 is an apocalyptic number.

189678227 is a deficient number, since it is larger than the sum of its proper divisors (1).

189678227 is an equidigital number, since it uses as much as digits as its factorization.

189678227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 50.

The square root of 189678227 is about 13772.3718727022. The cubic root of 189678227 is about 574.5649912096.

The spelling of 189678227 in words is "one hundred eighty-nine million, six hundred seventy-eight thousand, two hundred twenty-seven".