18360149 has 2 divisors, whose sum is σ = 18360150. Its totient is φ = 18360148.

The previous prime is 18360143. The next prime is 18360193. The reversal of 18360149 is 94106381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14577124 + 3783025 = 3818^2 + 1945^2 .

It is an emirp because it is prime and its reverse (94106381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18360149 - 2⁸ = 18359893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18360143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9180074 + 9180075.

It is an arithmetic number, because the mean of its divisors is an integer number (9180075).

Almost surely, 2^18360149 is an apocalyptic number.

It is an amenable number.

18360149 is a deficient number, since it is larger than the sum of its proper divisors (1).

18360149 is an equidigital number, since it uses as much as digits as its factorization.

18360149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 18360149 is about 4284.8744439015. The cubic root of 18360149 is about 263.8104939742.

The spelling of 18360149 in words is "eighteen million, three hundred sixty thousand, one hundred forty-nine".