228318589 has 2 divisors, whose sum is σ = 228318590. Its totient is φ = 228318588.

The previous prime is 228318577. The next prime is 228318599. The reversal of 228318589 is 985813822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130644900 + 97673689 = 11430^2 + 9883^2 .

It is a cyclic number.

It is not a de Polignac number, because 228318589 - 2⁵ = 228318557 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 (228318509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114159294 + 114159295.

It is an arithmetic number, because the mean of its divisors is an integer number (114159295).

Almost surely, 2^228318589 is an apocalyptic number.

It is an amenable number.

228318589 is a deficient number, since it is larger than the sum of its proper divisors (1).

228318589 is an equidigital number, since it uses as much as digits as its factorization.

228318589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 46.

The square root of 228318589 is about 15110.2147238218. The cubic root of 228318589 is about 611.1958883072.

The spelling of 228318589 in words is "two hundred twenty-eight million, three hundred eighteen thousand, five hundred eighty-nine".