163361089 has 4 divisors (see below), whose sum is σ = 168994260. Its totient is φ = 157727920.

The previous prime is 163361059. The next prime is 163361117. The reversal of 163361089 is 980163361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980163361 = 28181 ⋅34781.

It can be written as a sum of positive squares in 2 ways, for example, as 42185025 + 121176064 = 6495^2 + 11008^2 .

It is a cyclic number.

It is not a de Polignac number, because 163361089 - 2⁵ = 163361057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163361039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816542 + ... + 2816599.

It is an arithmetic number, because the mean of its divisors is an integer number (42248565).

Almost surely, 2^163361089 is an apocalyptic number.

It is an amenable number.

163361089 is a deficient number, since it is larger than the sum of its proper divisors (5633171).

163361089 is an equidigital number, since it uses as much as digits as its factorization.

163361089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633170.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 163361089 is about 12781.2788483782. The cubic root of 163361089 is about 546.6586274761.

The spelling of 163361089 in words is "one hundred sixty-three million, three hundred sixty-one thousand, eighty-nine".