166789133 has 8 divisors (see below), whose sum is σ = 191094720. Its totient is φ = 142603200.

The previous prime is 166789099. The next prime is 166789141. The reversal of 166789133 is 331987661.

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 166789133 - 2¹⁰ = 166788109 is a prime.

It is a super-2 number, since 2×166789133² = 55637229773783378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166789333) 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, 26903 + ... + 32516.

It is an arithmetic number, because the mean of its divisors is an integer number (23886840).

Almost surely, 2^166789133 is an apocalyptic number.

It is an amenable number.

166789133 is a deficient number, since it is larger than the sum of its proper divisors (24305587).

166789133 is an equidigital number, since it uses as much as digits as its factorization.

166789133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59827.

The product of its digits is 163296, while the sum is 44.

The square root of 166789133 is about 12914.6867170675. The cubic root of 166789133 is about 550.4559667887.

The spelling of 166789133 in words is "one hundred sixty-six million, seven hundred eighty-nine thousand, one hundred thirty-three".