168999998 has 16 divisors (see below), whose sum is σ = 265005216. Its totient is φ = 80678400.

The previous prime is 168999997. The next prime is 169000033. The reversal of 168999998 is 899999861.

168999998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168999997) 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, 24590 + ... + 30702.

It is an arithmetic number, because the mean of its divisors is an integer number (16562826).

Almost surely, 2^168999998 is an apocalyptic number.

168999998 is a deficient number, since it is larger than the sum of its proper divisors (96005218).

168999998 is a wasteful number, since it uses less digits than its factorization.

168999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739.

The product of its digits is 22674816, while the sum is 68.

The square root of 168999998 is about 12999.9999230769. Note that the first 4 decimals coincide. The cubic root of 168999998 is about 552.8774791869.

The spelling of 168999998 in words is "one hundred sixty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-eight".