18858873 has 16 divisors (see below), whose sum is σ = 28624896. Its totient is φ = 10932240.

The previous prime is 18858871. The next prime is 18858877. The reversal of 18858873 is 37885881.

It is not a de Polignac number, because 18858873 - 2¹ = 18858871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18858871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11665 + ... + 13182.

It is an arithmetic number, because the mean of its divisors is an integer number (1789056).

Almost surely, 2^18858873 is an apocalyptic number.

It is an amenable number.

18858873 is a deficient number, since it is larger than the sum of its proper divisors (9766023).

18858873 is a wasteful number, since it uses less digits than its factorization.

18858873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24884.

The product of its digits is 430080, while the sum is 48.

The square root of 18858873 is about 4342.6803934897. The cubic root of 18858873 is about 266.1778494794.

The spelling of 18858873 in words is "eighteen million, eight hundred fifty-eight thousand, eight hundred seventy-three".