2772841891 has 2 divisors, whose sum is σ = 2772841892. Its totient is φ = 2772841890.

The previous prime is 2772841879. The next prime is 2772841909. The reversal of 2772841891 is 1981482772.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2772841891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2772841801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386420945 + 1386420946.

It is an arithmetic number, because the mean of its divisors is an integer number (1386420946).

Almost surely, 2^2772841891 is an apocalyptic number.

2772841891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772841891 is an equidigital number, since it uses as much as digits as its factorization.

2772841891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 49.

The square root of 2772841891 is about 52657.7809160242. The cubic root of 2772841891 is about 1404.8879975559.

The spelling of 2772841891 in words is "two billion, seven hundred seventy-two million, eight hundred forty-one thousand, eight hundred ninety-one".