2783774449 has 2 divisors, whose sum is σ = 2783774450. Its totient is φ = 2783774448.

The previous prime is 2783774447. The next prime is 2783774509. The reversal of 2783774449 is 9444773872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2554797025 + 228977424 = 50545^2 + 15132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2783774449 - 2¹ = 2783774447 is a prime.

Together with 2783774447, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2783774449.

It is not a weakly prime, because it can be changed into another prime (2783774447) 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, 1391887224 + 1391887225.

It is an arithmetic number, because the mean of its divisors is an integer number (1391887225).

Almost surely, 2^2783774449 is an apocalyptic number.

It is an amenable number.

2783774449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2783774449 is an equidigital number, since it uses as much as digits as its factorization.

2783774449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 55.

The square root of 2783774449 is about 52761.4864176513. The cubic root of 2783774449 is about 1406.7319394689.

The spelling of 2783774449 in words is "two billion, seven hundred eighty-three million, seven hundred seventy-four thousand, four hundred forty-nine".