168649166 has 8 divisors (see below), whose sum is σ = 289112880. Its totient is φ = 72278208.

The previous prime is 168649157. The next prime is 168649183. The reversal of 168649166 is 661946861.

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

It is a self number, because there is not a number n which added to its sum of digits gives 168649166.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6023171 + ... + 6023198.

It is an arithmetic number, because the mean of its divisors is an integer number (36139110).

Almost surely, 2^168649166 is an apocalyptic number.

168649166 is a deficient number, since it is larger than the sum of its proper divisors (120463714).

168649166 is a wasteful number, since it uses less digits than its factorization.

168649166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12046378.

The product of its digits is 373248, while the sum is 47.

The square root of 168649166 is about 12986.4993743503. The cubic root of 168649166 is about 552.4946360119.

The spelling of 168649166 in words is "one hundred sixty-eight million, six hundred forty-nine thousand, one hundred sixty-six".