168143089 has 3 divisors (see below), whose sum is σ = 168156057. Its totient is φ = 168130122.

The previous prime is 168143069. The next prime is 168143093. The reversal of 168143089 is 980341861.

The square root of 168143089 is 12967.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 980341861 = 31 ⋅31623931.

It is not a de Polignac number, because 168143089 - 2⁵ = 168143057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168143069) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6484 + ... + 19450.

It is an arithmetic number, because the mean of its divisors is an integer number (56052019).

Almost surely, 2^168143089 is an apocalyptic number.

168143089 is the 12967-th square number.

168143089 is the 6484-th centered octagonal number.

It is an amenable number.

168143089 is a deficient number, since it is larger than the sum of its proper divisors (12968).

168143089 is an frugal number, since it uses more digits than its factorization.

168143089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25934 (or 12967 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The cubic root of 168143089 is about 551.9414462588.

The spelling of 168143089 in words is "one hundred sixty-eight million, one hundred forty-three thousand, eighty-nine".