168120194 has 16 divisors (see below), whose sum is σ = 276509376. Its totient is φ = 76028400.

The previous prime is 168120181. The next prime is 168120203. The reversal of 168120194 is 491021861.

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 168120194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15062 + ... + 23729.

It is an arithmetic number, because the mean of its divisors is an integer number (17281836).

Almost surely, 2^168120194 is an apocalyptic number.

168120194 is a deficient number, since it is larger than the sum of its proper divisors (108389182).

168120194 is a wasteful number, since it uses less digits than its factorization.

168120194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39001.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 168120194 is about 12966.1171520236. The cubic root of 168120194 is about 551.9163936423.

The spelling of 168120194 in words is "one hundred sixty-eight million, one hundred twenty thousand, one hundred ninety-four".