18084423 has 8 divisors (see below), whose sum is σ = 27557248. Its totient is φ = 10333944.

The previous prime is 18084421. The next prime is 18084461. The reversal of 18084423 is 32448081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18084423 - 2¹ = 18084421 is a prime.

It is a super-3 number, since 3×18084423³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18084421) 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 7 ways as a sum of consecutive naturals, for example, 430561 + ... + 430602.

It is an arithmetic number, because the mean of its divisors is an integer number (3444656).

Almost surely, 2^18084423 is an apocalyptic number.

18084423 is a deficient number, since it is larger than the sum of its proper divisors (9472825).

18084423 is an equidigital number, since it uses as much as digits as its factorization.

18084423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861173.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 18084423 is about 4252.5783943391. The cubic root of 18084423 is about 262.4832243248.

The spelling of 18084423 in words is "eighteen million, eighty-four thousand, four hundred twenty-three".