2855619791 has 2 divisors, whose sum is σ = 2855619792. Its totient is φ = 2855619790.

The previous prime is 2855619719. The next prime is 2855619827. The reversal of 2855619791 is 1979165582.

It is a happy number.

Together with previous prime (2855619719) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2855619791 - 2¹⁸ = 2855357647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2855619191) 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, 1427809895 + 1427809896.

It is an arithmetic number, because the mean of its divisors is an integer number (1427809896).

Almost surely, 2^2855619791 is an apocalyptic number.

2855619791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855619791 is an equidigital number, since it uses as much as digits as its factorization.

2855619791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 53.

The square root of 2855619791 is about 53437.9995040982. Note that the first 3 decimals coincide. The cubic root of 2855619791 is about 1418.7312265016.

Adding to 2855619791 its sum of digits (53), we get a square (2855619844 = 53438²).

The spelling of 2855619791 in words is "two billion, eight hundred fifty-five million, six hundred nineteen thousand, seven hundred ninety-one".