17994173 has 4 divisors (see below), whose sum is σ = 18480540. Its totient is φ = 17507808.

The previous prime is 17994161. The next prime is 17994199. The reversal of 17994173 is 37149971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37149971 = 1297 ⋅28643.

It can be written as a sum of positive squares in 2 ways, for example, as 12694969 + 5299204 = 3563^2 + 2302^2 .

It is not a de Polignac number, because 17994173 - 2⁸ = 17993917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 17994173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17994103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243128 + ... + 243201.

It is an arithmetic number, because the mean of its divisors is an integer number (4620135).

Almost surely, 2^17994173 is an apocalyptic number.

It is an amenable number.

17994173 is a deficient number, since it is larger than the sum of its proper divisors (486367).

17994173 is an equidigital number, since it uses as much as digits as its factorization.

17994173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486366.

The product of its digits is 47628, while the sum is 41.

The square root of 17994173 is about 4241.9539129981. The cubic root of 17994173 is about 262.0458566278.

The spelling of 17994173 in words is "seventeen million, nine hundred ninety-four thousand, one hundred seventy-three".