18226320104 has 32 divisors (see below), whose sum is σ = 34567236000. Its totient is φ = 9008973120.

The previous prime is 18226320103. The next prime is 18226320163. The reversal of 18226320104 is 40102362281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18226320103) 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 7 ways as a sum of consecutive naturals, for example, 215279 + ... + 287745.

It is an arithmetic number, because the mean of its divisors is an integer number (1080226125).

Almost surely, 2^18226320104 is an apocalyptic number.

It is an amenable number.

18226320104 is a deficient number, since it is larger than the sum of its proper divisors (16340915896).

18226320104 is a wasteful number, since it uses less digits than its factorization.

18226320104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72833 (or 72829 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 18226320104 its reverse (40102362281), we get a palindrome (58328682385).

The spelling of 18226320104 in words is "eighteen billion, two hundred twenty-six million, three hundred twenty thousand, one hundred four".