228544222445789 has 2 divisors, whose sum is σ = 228544222445790. Its totient is φ = 228544222445788.

The previous prime is 228544222445783. The next prime is 228544222445831. The reversal of 228544222445789 is 987544222445822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227965608160900 + 578614284889 = 15098530^2 + 760667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228544222445789 is a prime.

It is a super-2 number, since 2×228544222445789² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228544222445783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114272111222894 + 114272111222895.

It is an arithmetic number, because the mean of its divisors is an integer number (114272111222895).

Almost surely, 2^{228544222445789} is an apocalyptic number.

It is an amenable number.

228544222445789 is a deficient number, since it is larger than the sum of its proper divisors (1).

228544222445789 is an equidigital number, since it uses as much as digits as its factorization.

228544222445789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 825753600, while the sum is 68.

The spelling of 228544222445789 in words is "two hundred twenty-eight trillion, five hundred forty-four billion, two hundred twenty-two million, four hundred forty-five thousand, seven hundred eighty-nine".