166205339 has 2 divisors, whose sum is σ = 166205340. Its totient is φ = 166205338.

The previous prime is 166205323. The next prime is 166205357. The reversal of 166205339 is 933502661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166205339 - 2⁴ = 166205323 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166205299 and 166205308.

It is not a weakly prime, because it can be changed into another prime (166202339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83102669 + 83102670.

It is an arithmetic number, because the mean of its divisors is an integer number (83102670).

Almost surely, 2^166205339 is an apocalyptic number.

166205339 is a deficient number, since it is larger than the sum of its proper divisors (1).

166205339 is an equidigital number, since it uses as much as digits as its factorization.

166205339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 166205339 is about 12892.0649626039. The cubic root of 166205339 is about 549.8129821451.

The spelling of 166205339 in words is "one hundred sixty-six million, two hundred five thousand, three hundred thirty-nine".