2006808169 has 2 divisors, whose sum is σ = 2006808170. Its totient is φ = 2006808168.

The previous prime is 2006808107. The next prime is 2006808173. The reversal of 2006808169 is 9618086002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1999162944 + 7645225 = 44712^2 + 2765^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006808169 - 2⁹ = 2006807657 is a prime.

It is a super-2 number, since 2×2006808169² = 8054558054330265122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2006802169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003404084 + 1003404085.

It is an arithmetic number, because the mean of its divisors is an integer number (1003404085).

Almost surely, 2^2006808169 is an apocalyptic number.

It is an amenable number.

2006808169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006808169 is an equidigital number, since it uses as much as digits as its factorization.

2006808169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2006808169 is about 44797.4125257252. The cubic root of 2006808169 is about 1261.3490566723.

It can be divided in two parts, 200680 and 8169, that added together give a square (208849 = 457²).

The spelling of 2006808169 in words is "two billion, six million, eight hundred eight thousand, one hundred sixty-nine".