166086911 has 2 divisors, whose sum is σ = 166086912. Its totient is φ = 166086910.

The previous prime is 166086839. The next prime is 166086919. The reversal of 166086911 is 119680661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166086911 - 2¹⁸ = 165824767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166086919) 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, 83043455 + 83043456.

It is an arithmetic number, because the mean of its divisors is an integer number (83043456).

Almost surely, 2^166086911 is an apocalyptic number.

166086911 is a deficient number, since it is larger than the sum of its proper divisors (1).

166086911 is an equidigital number, since it uses as much as digits as its factorization.

166086911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 166086911 is about 12887.4710862915. The cubic root of 166086911 is about 549.6823631497.

The spelling of 166086911 in words is "one hundred sixty-six million, eighty-six thousand, nine hundred eleven".