18103227 has 8 divisors (see below), whose sum is σ = 24224064. Its totient is φ = 12025608.

The previous prime is 18103201. The next prime is 18103237. The reversal of 18103227 is 72230181.

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

It is not a de Polignac number, because 18103227 - 2¹² = 18099131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18103197 and 18103206.

It is not an unprimeable number, because it can be changed into a prime (18103237) 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, 9813 + ... + 11510.

It is an arithmetic number, because the mean of its divisors is an integer number (3028008).

Almost surely, 2^18103227 is an apocalyptic number.

18103227 is a deficient number, since it is larger than the sum of its proper divisors (6120837).

18103227 is a wasteful number, since it uses less digits than its factorization.

18103227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21609.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 18103227 is about 4254.7887139081. The cubic root of 18103227 is about 262.5741686111.

The spelling of 18103227 in words is "eighteen million, one hundred three thousand, two hundred twenty-seven".