227645189 has 2 divisors, whose sum is σ = 227645190. Its totient is φ = 227645188.

The previous prime is 227645153. The next prime is 227645207. The reversal of 227645189 is 981546722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200448964 + 27196225 = 14158^2 + 5215^2 .

It is a cyclic number.

It is not a de Polignac number, because 227645189 - 2⁸ = 227644933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227644189) 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, 113822594 + 113822595.

It is an arithmetic number, because the mean of its divisors is an integer number (113822595).

Almost surely, 2^227645189 is an apocalyptic number.

It is an amenable number.

227645189 is a deficient number, since it is larger than the sum of its proper divisors (1).

227645189 is an equidigital number, since it uses as much as digits as its factorization.

227645189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 227645189 is about 15087.9153298261. The cubic root of 227645189 is about 610.5944120791.

The spelling of 227645189 in words is "two hundred twenty-seven million, six hundred forty-five thousand, one hundred eighty-nine".