168140898 has 24 divisors (see below), whose sum is σ = 376868700. Its totient is φ = 54114144.

The previous prime is 168140891. The next prime is 168140909. The reversal of 168140898 is 898041861.

168140898 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 167883849 + 257049 = 12957^2 + 507^2 .

It is not an unprimeable number, because it can be changed into a prime (168140891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160533 + ... + 161576.

Almost surely, 2^168140898 is an apocalyptic number.

168140898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168140898 is an abundant number, since it is smaller than the sum of its proper divisors (208727802).

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

168140898 is a wasteful number, since it uses less digits than its factorization.

168140898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322146 (or 322143 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 168140898 is about 12966.9155160354. The cubic root of 168140898 is about 551.9390488782.

The spelling of 168140898 in words is "one hundred sixty-eight million, one hundred forty thousand, eight hundred ninety-eight".