18229184999 has 4 divisors (see below), whose sum is σ = 18478899936. Its totient is φ = 17979470064.

The previous prime is 18229184977. The next prime is 18229185019. The reversal of 18229184999 is 99948192281.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18229184999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18229184299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124857359 + ... + 124857504.

It is an arithmetic number, because the mean of its divisors is an integer number (4619724984).

Almost surely, 2^18229184999 is an apocalyptic number.

18229184999 is a deficient number, since it is larger than the sum of its proper divisors (249714937).

18229184999 is an equidigital number, since it uses as much as digits as its factorization.

18229184999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249714936.

The product of its digits is 6718464, while the sum is 62.

The spelling of 18229184999 in words is "eighteen billion, two hundred twenty-nine million, one hundred eighty-four thousand, nine hundred ninety-nine".