2228405789 has 2 divisors, whose sum is σ = 2228405790. Its totient is φ = 2228405788.

The previous prime is 2228405779. The next prime is 2228405797. The reversal of 2228405789 is 9875048222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1865808025 + 362597764 = 43195^2 + 19042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2228405789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2228405759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114202894 + 1114202895.

It is an arithmetic number, because the mean of its divisors is an integer number (1114202895).

Almost surely, 2^2228405789 is an apocalyptic number.

It is an amenable number.

2228405789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2228405789 is an equidigital number, since it uses as much as digits as its factorization.

2228405789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2228405789 is about 47205.9931470571. The cubic root of 2228405789 is about 1306.1651517150.

The spelling of 2228405789 in words is "two billion, two hundred twenty-eight million, four hundred five thousand, seven hundred eighty-nine".