18075173 has 4 divisors (see below), whose sum is σ = 18416268. Its totient is φ = 17734080.

The previous prime is 18075133. The next prime is 18075191. The reversal of 18075173 is 37157081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8631844 + 9443329 = 2938^2 + 3073^2 .

It is a cyclic number.

It is not a de Polignac number, because 18075173 - 2¹⁶ = 18009637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075103) 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, 170468 + ... + 170573.

It is an arithmetic number, because the mean of its divisors is an integer number (4604067).

Almost surely, 2^18075173 is an apocalyptic number.

It is an amenable number.

18075173 is a deficient number, since it is larger than the sum of its proper divisors (341095).

18075173 is an equidigital number, since it uses as much as digits as its factorization.

18075173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341094.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 18075173 is about 4251.4906797499. The cubic root of 18075173 is about 262.4384641850.

The spelling of 18075173 in words is "eighteen million, seventy-five thousand, one hundred seventy-three".