2628707489 has 2 divisors, whose sum is σ = 2628707490. Its totient is φ = 2628707488.

The previous prime is 2628707461. The next prime is 2628707539. The reversal of 2628707489 is 9847078262.

It is a happy number.

2628707489 is digitally balanced in base 2, 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., 2611210000 + 17497489 = 51100^2 + 4183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2628707489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2628707489.

It is not a weakly prime, because it can be changed into another prime (2628707449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314353744 + 1314353745.

It is an arithmetic number, because the mean of its divisors is an integer number (1314353745).

Almost surely, 2^2628707489 is an apocalyptic number.

It is an amenable number.

2628707489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2628707489 is an equidigital number, since it uses as much as digits as its factorization.

2628707489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 2628707489 is about 51270.9224512296. The cubic root of 2628707489 is about 1380.1112227447. Note that the first 3 decimals are identical.

The spelling of 2628707489 in words is "two billion, six hundred twenty-eight million, seven hundred seven thousand, four hundred eighty-nine".