2784895489 has 2 divisors, whose sum is σ = 2784895490. Its totient is φ = 2784895488.

The previous prime is 2784895427. The next prime is 2784895501. The reversal of 2784895489 is 9845984872.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2022031089 + 762864400 = 44967^2 + 27620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2784895489 - 2¹⁷ = 2784764417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2784895489.

It is not a weakly prime, because it can be changed into another prime (2784895889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392447744 + 1392447745.

It is an arithmetic number, because the mean of its divisors is an integer number (1392447745).

Almost surely, 2^2784895489 is an apocalyptic number.

It is an amenable number.

2784895489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2784895489 is an equidigital number, since it uses as much as digits as its factorization.

2784895489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 64.

The square root of 2784895489 is about 52772.1090065576. The cubic root of 2784895489 is about 1406.9207468072.

The spelling of 2784895489 in words is "two billion, seven hundred eighty-four million, eight hundred ninety-five thousand, four hundred eighty-nine".