18803873 has 4 divisors (see below), whose sum is σ = 20513328. Its totient is φ = 17094420.

The previous prime is 18803849. The next prime is 18803893. The reversal of 18803873 is 37830881.

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 18803873 - 2¹⁶ = 18738337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18803833) 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, 854711 + ... + 854732.

It is an arithmetic number, because the mean of its divisors is an integer number (5128332).

Almost surely, 2^18803873 is an apocalyptic number.

It is an amenable number.

18803873 is a deficient number, since it is larger than the sum of its proper divisors (1709455).

18803873 is a wasteful number, since it uses less digits than its factorization.

18803873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709454.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 18803873 is about 4336.3432751571. The cubic root of 18803873 is about 265.9188372425.

The spelling of 18803873 in words is "eighteen million, eight hundred three thousand, eight hundred seventy-three".