18036227 has 8 divisors (see below), whose sum is σ = 19868160. Its totient is φ = 16236360.

The previous prime is 18036169. The next prime is 18036229. The reversal of 18036227 is 72263081.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18036227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18036227.

It is not an unprimeable number, because it can be changed into a prime (18036229) 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, 6827 + ... + 9092.

It is an arithmetic number, because the mean of its divisors is an integer number (2483520).

Almost surely, 2^18036227 is an apocalyptic number.

18036227 is a deficient number, since it is larger than the sum of its proper divisors (1831933).

18036227 is a wasteful number, since it uses less digits than its factorization.

18036227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16033.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 18036227 is about 4246.9079340151. The cubic root of 18036227 is about 262.2498393766.

The spelling of 18036227 in words is "eighteen million, thirty-six thousand, two hundred twenty-seven".