3128807489 has 2 divisors, whose sum is σ = 3128807490. Its totient is φ = 3128807488.

The previous prime is 3128807471. The next prime is 3128807491. The reversal of 3128807489 is 9847088213.

3128807489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2949033025 + 179774464 = 54305^2 + 13408^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128807489 - 2²⁰ = 3127758913 is a prime.

Together with 3128807491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3128807389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564403744 + 1564403745.

It is an arithmetic number, because the mean of its divisors is an integer number (1564403745).

Almost surely, 2^3128807489 is an apocalyptic number.

It is an amenable number.

3128807489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128807489 is an equidigital number, since it uses as much as digits as its factorization.

3128807489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 3128807489 is about 55935.7442875305. The cubic root of 3128807489 is about 1462.6023969409.

The spelling of 3128807489 in words is "three billion, one hundred twenty-eight million, eight hundred seven thousand, four hundred eighty-nine".