2772831641 has 2 divisors, whose sum is σ = 2772831642. Its totient is φ = 2772831640.

The previous prime is 2772831637. The next prime is 2772831643. The reversal of 2772831641 is 1461382772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2296326400 + 476505241 = 47920^2 + 21829^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772831641 - 2² = 2772831637 is a prime.

Together with 2772831643, 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 (2772831643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386415820 + 1386415821.

It is an arithmetic number, because the mean of its divisors is an integer number (1386415821).

Almost surely, 2^2772831641 is an apocalyptic number.

It is an amenable number.

2772831641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772831641 is an equidigital number, since it uses as much as digits as its factorization.

2772831641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 2772831641 is about 52657.6835893870. The cubic root of 2772831641 is about 1404.8862664656.

The spelling of 2772831641 in words is "two billion, seven hundred seventy-two million, eight hundred thirty-one thousand, six hundred forty-one".