4128628489 has 2 divisors, whose sum is σ = 4128628490. Its totient is φ = 4128628488.

The previous prime is 4128628481. The next prime is 4128628499. The reversal of 4128628489 is 9848268214.

4128628489 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2946644089 + 1181984400 = 54283^2 + 34380^2 .

It is a cyclic number.

It is not a de Polignac number, because 4128628489 - 2³ = 4128628481 is a prime.

It is not a weakly prime, because it can be changed into another prime (4128628481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2064314244 + 2064314245.

It is an arithmetic number, because the mean of its divisors is an integer number (2064314245).

Almost surely, 2^4128628489 is an apocalyptic number.

It is an amenable number.

4128628489 is a deficient number, since it is larger than the sum of its proper divisors (1).

4128628489 is an equidigital number, since it uses as much as digits as its factorization.

4128628489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1769472, while the sum is 52.

The square root of 4128628489 is about 64254.4044326924. The cubic root of 4128628489 is about 1604.2372697317.

The spelling of 4128628489 in words is "four billion, one hundred twenty-eight million, six hundred twenty-eight thousand, four hundred eighty-nine".