18850173 has 4 divisors (see below), whose sum is σ = 25133568. Its totient is φ = 12566780.

The previous prime is 18850157. The next prime is 18850177. The reversal of 18850173 is 37105881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18850173 - 2⁴ = 18850157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18850177) 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, 3141693 + ... + 3141698.

It is an arithmetic number, because the mean of its divisors is an integer number (6283392).

Almost surely, 2^18850173 is an apocalyptic number.

It is an amenable number.

18850173 is a deficient number, since it is larger than the sum of its proper divisors (6283395).

18850173 is an equidigital number, since it uses as much as digits as its factorization.

18850173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283394.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 18850173 is about 4341.6785924340. The cubic root of 18850173 is about 266.1369120122.

The spelling of 18850173 in words is "eighteen million, eight hundred fifty thousand, one hundred seventy-three".