2069808779 has 2 divisors, whose sum is σ = 2069808780. Its totient is φ = 2069808778.

The previous prime is 2069808743. The next prime is 2069808799. The reversal of 2069808779 is 9778089602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2069808779 - 2¹⁶ = 2069743243 is a prime.

It is not a weakly prime, because it can be changed into another prime (2069808799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034904389 + 1034904390.

It is an arithmetic number, because the mean of its divisors is an integer number (1034904390).

Almost surely, 2^2069808779 is an apocalyptic number.

2069808779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2069808779 is an equidigital number, since it uses as much as digits as its factorization.

2069808779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 2069808779 is about 45495.1511592170. The cubic root of 2069808779 is about 1274.4126535271.

The spelling of 2069808779 in words is "two billion, sixty-nine million, eight hundred eight thousand, seven hundred seventy-nine".