168649118 has 16 divisors (see below), whose sum is σ = 276191856. Its totient is φ = 76597440.

The previous prime is 168649109. The next prime is 168649141. The reversal of 168649118 is 811946861.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 36380 + ... + 40752.

It is an arithmetic number, because the mean of its divisors is an integer number (17261991).

Almost surely, 2^168649118 is an apocalyptic number.

168649118 is a deficient number, since it is larger than the sum of its proper divisors (107542738).

168649118 is a wasteful number, since it uses less digits than its factorization.

168649118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139.

The product of its digits is 82944, while the sum is 44.

The square root of 168649118 is about 12986.4975262771. The cubic root of 168649118 is about 552.4945835959.

The spelling of 168649118 in words is "one hundred sixty-eight million, six hundred forty-nine thousand, one hundred eighteen".