2784783649 has 2 divisors, whose sum is σ = 2784783650. Its totient is φ = 2784783648.

The previous prime is 2784783619. The next prime is 2784783671. The reversal of 2784783649 is 9463874872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1641870400 + 1142913249 = 40520^2 + 33807^2 .

It is a cyclic number.

It is not a de Polignac number, because 2784783649 - 2⁹ = 2784783137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2784783593 and 2784783602.

It is not a weakly prime, because it can be changed into another prime (2784783619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392391824 + 1392391825.

It is an arithmetic number, because the mean of its divisors is an integer number (1392391825).

Almost surely, 2^2784783649 is an apocalyptic number.

It is an amenable number.

2784783649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2784783649 is an equidigital number, since it uses as much as digits as its factorization.

2784783649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16257024, while the sum is 58.

The square root of 2784783649 is about 52771.0493452613. The cubic root of 2784783649 is about 1406.9019128122.

The spelling of 2784783649 in words is "two billion, seven hundred eighty-four million, seven hundred eighty-three thousand, six hundred forty-nine".