18354227 has 2 divisors, whose sum is σ = 18354228. Its totient is φ = 18354226.

The previous prime is 18354221. The next prime is 18354269. The reversal of 18354227 is 72245381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18354227 - 2⁸ = 18353971 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18354193 and 18354202.

It is not a weakly prime, because it can be changed into another prime (18354221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9177113 + 9177114.

It is an arithmetic number, because the mean of its divisors is an integer number (9177114).

Almost surely, 2^18354227 is an apocalyptic number.

18354227 is a deficient number, since it is larger than the sum of its proper divisors (1).

18354227 is an equidigital number, since it uses as much as digits as its factorization.

18354227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 32.

The square root of 18354227 is about 4284.1833527523. The cubic root of 18354227 is about 263.7821272156.

It can be divided in two parts, 18354 and 227, that added together give a palindrome (18581).

The spelling of 18354227 in words is "eighteen million, three hundred fifty-four thousand, two hundred twenty-seven".