18054321 has 4 divisors (see below), whose sum is σ = 24072432. Its totient is φ = 12036212.

The previous prime is 18054317. The next prime is 18054329. The reversal of 18054321 is 12345081.

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 18054321 - 2² = 18054317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18054291 and 18054300.

It is not an unprimeable number, because it can be changed into a prime (18054329) 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, 3009051 + ... + 3009056.

It is an arithmetic number, because the mean of its divisors is an integer number (6018108).

Almost surely, 2^18054321 is an apocalyptic number.

It is an amenable number.

18054321 is a deficient number, since it is larger than the sum of its proper divisors (6018111).

18054321 is an equidigital number, since it uses as much as digits as its factorization.

18054321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018110.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18054321 is about 4249.0376557522. The cubic root of 18054321 is about 262.3375066900.

The spelling of 18054321 in words is "eighteen million, fifty-four thousand, three hundred twenty-one".