2773442921 has 2 divisors, whose sum is σ = 2773442922. Its totient is φ = 2773442920.

The previous prime is 2773442873. The next prime is 2773442923. The reversal of 2773442921 is 1292443772.

2773442921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2765602921 + 7840000 = 52589^2 + 2800^2 .

It is a cyclic number.

It is not a de Polignac number, because 2773442921 - 2⁶ = 2773442857 is a prime.

Together with 2773442923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2773442923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386721460 + 1386721461.

It is an arithmetic number, because the mean of its divisors is an integer number (1386721461).

Almost surely, 2^2773442921 is an apocalyptic number.

It is an amenable number.

2773442921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2773442921 is an equidigital number, since it uses as much as digits as its factorization.

2773442921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 2773442921 is about 52663.4875506740. The cubic root of 2773442921 is about 1404.9894961707.

The spelling of 2773442921 in words is "two billion, seven hundred seventy-three million, four hundred forty-two thousand, nine hundred twenty-one".