166220319 has 8 divisors (see below), whose sum is σ = 223245360. Its totient is φ = 110004416.

The previous prime is 166220311. The next prime is 166220323. The reversal of 166220319 is 913022661.

166220319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166220319 - 2³ = 166220311 is a prime.

It is a super-2 number, since 2×166220319² = 55258388896923522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166220311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201804 + ... + 202625.

It is an arithmetic number, because the mean of its divisors is an integer number (27905670).

Almost surely, 2^166220319 is an apocalyptic number.

166220319 is a deficient number, since it is larger than the sum of its proper divisors (57025041).

166220319 is a wasteful number, since it uses less digits than its factorization.

166220319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404569.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 166220319 is about 12892.6459270392. The cubic root of 166220319 is about 549.8294997674.

The spelling of 166220319 in words is "one hundred sixty-six million, two hundred twenty thousand, three hundred nineteen".