18875873 has 4 divisors (see below), whose sum is σ = 19869360. Its totient is φ = 17882388.

The previous prime is 18875851. The next prime is 18875903. The reversal of 18875873 is 37857881.

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 18875873 - 2¹⁸ = 18613729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18875803) 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, 496715 + ... + 496752.

It is an arithmetic number, because the mean of its divisors is an integer number (4967340).

Almost surely, 2^18875873 is an apocalyptic number.

It is an amenable number.

18875873 is a deficient number, since it is larger than the sum of its proper divisors (993487).

18875873 is an equidigital number, since it uses as much as digits as its factorization.

18875873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993486.

The product of its digits is 376320, while the sum is 47.

The square root of 18875873 is about 4344.6372690939. The cubic root of 18875873 is about 266.2578059090.

The spelling of 18875873 in words is "eighteen million, eight hundred seventy-five thousand, eight hundred seventy-three".