163489173 has 8 divisors (see below), whose sum is σ = 220435200. Its totient is φ = 107767968.

The previous prime is 163489169. The next prime is 163489189. The reversal of 163489173 is 371984361.

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

It is not a de Polignac number, because 163489173 - 2² = 163489169 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163489973) 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, 305893 + ... + 306426.

It is an arithmetic number, because the mean of its divisors is an integer number (27554400).

Almost surely, 2^163489173 is an apocalyptic number.

It is an amenable number.

163489173 is a deficient number, since it is larger than the sum of its proper divisors (56946027).

163489173 is an equidigital number, since it uses as much as digits as its factorization.

163489173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612411.

The product of its digits is 108864, while the sum is 42.

The square root of 163489173 is about 12786.2884763328. The cubic root of 163489173 is about 546.8014602088.

The spelling of 163489173 in words is "one hundred sixty-three million, four hundred eighty-nine thousand, one hundred seventy-three".