18114281 has 2 divisors, whose sum is σ = 18114282. Its totient is φ = 18114280.

The previous prime is 18114227. The next prime is 18114307. The reversal of 18114281 is 18241181.

It is an a-pointer prime, because the next prime (18114307) can be obtained adding 18114281 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13808656 + 4305625 = 3716^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 18114281 - 2¹⁰ = 18113257 is a prime.

It is a super-2 number, since 2×18114281² = 656254352293922, which contains 22 as substring.

It is equal to p_1158128 and since 18114281 and 1158128 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18114281.

It is not a weakly prime, because it can be changed into another prime (18116281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9057140 + 9057141.

It is an arithmetic number, because the mean of its divisors is an integer number (9057141).

Almost surely, 2^18114281 is an apocalyptic number.

It is an amenable number.

18114281 is a deficient number, since it is larger than the sum of its proper divisors (1).

18114281 is an equidigital number, since it uses as much as digits as its factorization.

18114281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 26.

The square root of 18114281 is about 4256.0875225963. The cubic root of 18114281 is about 262.6276011528.

The spelling of 18114281 in words is "eighteen million, one hundred fourteen thousand, two hundred eighty-one".