168281089 has 8 divisors (see below), whose sum is σ = 170628192. Its totient is φ = 165941760.

The previous prime is 168281083. The next prime is 168281107. The reversal of 168281089 is 980182861.

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

It is a cyclic number.

It is not a de Polignac number, because 168281089 - 2⁷ = 168280961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168281083) 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, 51622 + ... + 54784.

It is an arithmetic number, because the mean of its divisors is an integer number (21328524).

Almost surely, 2^168281089 is an apocalyptic number.

It is an amenable number.

168281089 is a deficient number, since it is larger than the sum of its proper divisors (2347103).

168281089 is an equidigital number, since it uses as much as digits as its factorization.

168281089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887.

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 168281089 is about 12972.3201086005. The cubic root of 168281089 is about 552.0924031844.

The spelling of 168281089 in words is "one hundred sixty-eight million, two hundred eighty-one thousand, eighty-nine".