166338789 has 8 divisors (see below), whose sum is σ = 221904000. Its totient is φ = 110833056.

The previous prime is 166338779. The next prime is 166338803. The reversal of 166338789 is 987833661.

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

It is not a de Polignac number, because 166338789 - 2⁴ = 166338773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166338709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7872 + ... + 19865.

It is an arithmetic number, because the mean of its divisors is an integer number (27738000).

Almost surely, 2^166338789 is an apocalyptic number.

It is an amenable number.

166338789 is a deficient number, since it is larger than the sum of its proper divisors (55565211).

166338789 is a wasteful number, since it uses less digits than its factorization.

166338789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29739.

The product of its digits is 1306368, while the sum is 51.

The square root of 166338789 is about 12897.2395883770. The cubic root of 166338789 is about 549.9600951764.

The spelling of 166338789 in words is "one hundred sixty-six million, three hundred thirty-eight thousand, seven hundred eighty-nine".