166226423 has 16 divisors (see below), whose sum is σ = 188939520. Its totient is φ = 144907200.

The previous prime is 166226399. The next prime is 166226443. The reversal of 166226423 is 324622661.

It is a cyclic number.

It is not a de Polignac number, because 166226423 - 2⁸ = 166226167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166226423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166226443) 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 in 15 ways as a sum of consecutive naturals, for example, 23486 + ... + 29732.

It is an arithmetic number, because the mean of its divisors is an integer number (11808720).

Almost surely, 2^166226423 is an apocalyptic number.

166226423 is a deficient number, since it is larger than the sum of its proper divisors (22713097).

166226423 is a wasteful number, since it uses less digits than its factorization.

166226423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358.

The product of its digits is 20736, while the sum is 32.

The square root of 166226423 is about 12892.8826489657. The cubic root of 166226423 is about 549.8362300280.

The spelling of 166226423 in words is "one hundred sixty-six million, two hundred twenty-six thousand, four hundred twenty-three".