18227003 has 2 divisors, whose sum is σ = 18227004. Its totient is φ = 18227002.

The previous prime is 18226987. The next prime is 18227081. The reversal of 18227003 is 30072281.

It is a weak prime.

It is an emirp because it is prime and its reverse (30072281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18227003 - 2⁴ = 18226987 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18227003.

It is not a weakly prime, because it can be changed into another prime (18227093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9113501 + 9113502.

It is an arithmetic number, because the mean of its divisors is an integer number (9113502).

Almost surely, 2^18227003 is an apocalyptic number.

18227003 is a deficient number, since it is larger than the sum of its proper divisors (1).

18227003 is an equidigital number, since it uses as much as digits as its factorization.

18227003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 18227003 is about 4269.3094289358. The cubic root of 18227003 is about 263.1712369214.

Adding to 18227003 its reverse (30072281), we get a palindrome (48299284).

The spelling of 18227003 in words is "eighteen million, two hundred twenty-seven thousand, three".