18873355 has 4 divisors (see below), whose sum is σ = 22648032. Its totient is φ = 15098680.

The previous prime is 18873331. The next prime is 18873419. The reversal of 18873355 is 55337881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55337881 = 3067 ⋅18043.

It is not a de Polignac number, because 18873355 - 2⁷ = 18873227 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1887331 + ... + 1887340.

It is an arithmetic number, because the mean of its divisors is an integer number (5662008).

Almost surely, 2^18873355 is an apocalyptic number.

18873355 is a deficient number, since it is larger than the sum of its proper divisors (3774677).

18873355 is an equidigital number, since it uses as much as digits as its factorization.

18873355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774676.

The product of its digits is 100800, while the sum is 40.

The square root of 18873355 is about 4344.3474768945. The cubic root of 18873355 is about 266.2459659803.

The spelling of 18873355 in words is "eighteen million, eight hundred seventy-three thousand, three hundred fifty-five".