18275321 has 8 divisors (see below), whose sum is σ = 19282080. Its totient is φ = 17273088.

The previous prime is 18275281. The next prime is 18275351. The reversal of 18275321 is 12357281.

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

It is a cyclic number.

It is not a de Polignac number, because 18275321 - 2¹⁴ = 18258937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18275351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10130 + ... + 11796.

It is an arithmetic number, because the mean of its divisors is an integer number (2410260).

Almost surely, 2^18275321 is an apocalyptic number.

It is an amenable number.

18275321 is a deficient number, since it is larger than the sum of its proper divisors (1006759).

18275321 is a wasteful number, since it uses less digits than its factorization.

18275321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263.

The product of its digits is 3360, while the sum is 29.

The square root of 18275321 is about 4274.9644442966. The cubic root of 18275321 is about 263.4035787960.

The spelling of 18275321 in words is "eighteen million, two hundred seventy-five thousand, three hundred twenty-one".