166796189 has 4 divisors (see below), whose sum is σ = 190624224. Its totient is φ = 142968156.

The previous prime is 166796171. The next prime is 166796191. The reversal of 166796189 is 981697661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166796189 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166796189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166798189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11914007 + ... + 11914020.

It is an arithmetic number, because the mean of its divisors is an integer number (47656056).

Almost surely, 2^166796189 is an apocalyptic number.

It is an amenable number.

166796189 is a deficient number, since it is larger than the sum of its proper divisors (23828035).

166796189 is an equidigital number, since it uses as much as digits as its factorization.

166796189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23828034.

The product of its digits is 979776, while the sum is 53.

The square root of 166796189 is about 12914.9598915366. The cubic root of 166796189 is about 550.4637290101.

The spelling of 166796189 in words is "one hundred sixty-six million, seven hundred ninety-six thousand, one hundred eighty-nine".