18084799 has 2 divisors, whose sum is σ = 18084800. Its totient is φ = 18084798.

The previous prime is 18084791. The next prime is 18084851. The reversal of 18084799 is 99748081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18084799 - 2³ = 18084791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18084791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9042399 + 9042400.

It is an arithmetic number, because the mean of its divisors is an integer number (9042400).

Almost surely, 2^18084799 is an apocalyptic number.

18084799 is a deficient number, since it is larger than the sum of its proper divisors (1).

18084799 is an equidigital number, since it uses as much as digits as its factorization.

18084799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 18084799 is about 4252.6226025830. The cubic root of 18084799 is about 262.4850434411.

The spelling of 18084799 in words is "eighteen million, eighty-four thousand, seven hundred ninety-nine".