166664119 has 2 divisors, whose sum is σ = 166664120. Its totient is φ = 166664118.

The previous prime is 166664111. The next prime is 166664123. The reversal of 166664119 is 911466661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166664119 - 2³ = 166664111 is a prime.

It is a super-2 number, since 2×166664119² = 55553857124092322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166664111) 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, 83332059 + 83332060.

It is an arithmetic number, because the mean of its divisors is an integer number (83332060).

Almost surely, 2^166664119 is an apocalyptic number.

166664119 is a deficient number, since it is larger than the sum of its proper divisors (1).

166664119 is an equidigital number, since it uses as much as digits as its factorization.

166664119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 166664119 is about 12909.8458162753. The cubic root of 166664119 is about 550.3184040648.

The spelling of 166664119 in words is "one hundred sixty-six million, six hundred sixty-four thousand, one hundred nineteen".