166030219 has 2 divisors, whose sum is σ = 166030220. Its totient is φ = 166030218.

The previous prime is 166030213. The next prime is 166030229. The reversal of 166030219 is 912030661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166030219 - 2⁵ = 166030187 is a prime.

It is a super-2 number, since 2×166030219² = 55132067242375922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166030213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83015109 + 83015110.

It is an arithmetic number, because the mean of its divisors is an integer number (83015110).

Almost surely, 2^166030219 is an apocalyptic number.

166030219 is a deficient number, since it is larger than the sum of its proper divisors (1).

166030219 is an equidigital number, since it uses as much as digits as its factorization.

166030219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 166030219 is about 12885.2713979955. The cubic root of 166030219 is about 549.6198132901.

The spelling of 166030219 in words is "one hundred sixty-six million, thirty thousand, two hundred nineteen".