18027201 has 4 divisors (see below), whose sum is σ = 24036272. Its totient is φ = 12018132.

The previous prime is 18027199. The next prime is 18027203. The reversal of 18027201 is 10272081.

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 an interprime number because it is at equal distance from previous prime (18027199) and next prime (18027203).

It is not a de Polignac number, because 18027201 - 2¹ = 18027199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18027203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3004531 + ... + 3004536.

It is an arithmetic number, because the mean of its divisors is an integer number (6009068).

Almost surely, 2^18027201 is an apocalyptic number.

It is an amenable number.

18027201 is a deficient number, since it is larger than the sum of its proper divisors (6009071).

18027201 is an equidigital number, since it uses as much as digits as its factorization.

18027201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009070.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 18027201 is about 4245.8451455511. The cubic root of 18027201 is about 262.2060855469.

Adding to 18027201 its reverse (10272081), we get a palindrome (28299282).

The spelling of 18027201 in words is "eighteen million, twenty-seven thousand, two hundred one".