166444233 has 8 divisors (see below), whose sum is σ = 221988096. Its totient is φ = 110931600.

The previous prime is 166444219. The next prime is 166444259. The reversal of 166444233 is 332444661.

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

It is not a de Polignac number, because 166444233 - 2⁹ = 166443721 is a prime.

It is a super-3 number, since 3×166444233³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166444194 and 166444203.

It is not an unprimeable number, because it can be changed into a prime (166444633) 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 7 ways as a sum of consecutive naturals, for example, 11343 + ... + 21483.

It is an arithmetic number, because the mean of its divisors is an integer number (27748512).

Almost surely, 2^166444233 is an apocalyptic number.

It is an amenable number.

166444233 is a deficient number, since it is larger than the sum of its proper divisors (55543863).

166444233 is a wasteful number, since it uses less digits than its factorization.

166444233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15615.

The product of its digits is 41472, while the sum is 33.

The square root of 166444233 is about 12901.3267922334. The cubic root of 166444233 is about 550.0762792275.

Adding to 166444233 its reverse (332444661), we get a palindrome (498888894).

The spelling of 166444233 in words is "one hundred sixty-six million, four hundred forty-four thousand, two hundred thirty-three".