168194 has 8 divisors (see below), whose sum is σ = 271740. Its totient is φ = 77616.

The previous prime is 168193. The next prime is 168197. The reversal of 168194 is 491861.

It can be written as a sum of positive squares in 2 ways, for example, as 133225 + 34969 = 365^2 + 187^2 .

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

It is not an unprimeable number, because it can be changed into a prime (168193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3209 + ... + 3260.

2¹⁶⁸¹⁹⁴ is an apocalyptic number.

168194 is a deficient number, since it is larger than the sum of its proper divisors (103546).

168194 is a wasteful number, since it uses less digits than its factorization.

168194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484.

The product of its digits is 1728, while the sum is 29.

The square root of 168194 is about 410.1146181252. The cubic root of 168194 is about 55.1997146943.

It can be divided in two parts, 16819 and 4, that multiplied together give a palindrome (67276).

The spelling of 168194 in words is "one hundred sixty-eight thousand, one hundred ninety-four".