168918 has 16 divisors (see below), whose sum is σ = 345600. Its totient is φ = 55016.

The previous prime is 168913. The next prime is 168937. The reversal of 168918 is 819861.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 581.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2¹⁶⁸⁹¹⁸ is an apocalyptic number.

168918 is an abundant number, since it is smaller than the sum of its proper divisors (176682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168918 is a wasteful number, since it uses less digits than its factorization.

168918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651.

The product of its digits is 3456, while the sum is 33.

The square root of 168918 is about 410.9963503488. The cubic root of 168918 is about 55.2788046875.

The spelling of 168918 in words is "one hundred sixty-eight thousand, nine hundred eighteen".