2773830649 has 2 divisors, whose sum is σ = 2773830650. Its totient is φ = 2773830648.

The previous prime is 2773830641. The next prime is 2773830667. The reversal of 2773830649 is 9460383772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1527246400 + 1246584249 = 39080^2 + 35307^2 .

It is a cyclic number.

It is not a de Polignac number, because 2773830649 - 2³ = 2773830641 is a prime.

It is a super-2 number, since 2×2773830649² = 15388272938663522402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2773830641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386915324 + 1386915325.

It is an arithmetic number, because the mean of its divisors is an integer number (1386915325).

Almost surely, 2^2773830649 is an apocalyptic number.

It is an amenable number.

2773830649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2773830649 is an equidigital number, since it uses as much as digits as its factorization.

2773830649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The square root of 2773830649 is about 52667.1686062579. The cubic root of 2773830649 is about 1405.0549657452.

The spelling of 2773830649 in words is "two billion, seven hundred seventy-three million, eight hundred thirty thousand, six hundred forty-nine".