18226604384 has 12 divisors (see below), whose sum is σ = 35883627444. Its totient is φ = 9113302176.

The previous prime is 18226604351. The next prime is 18226604387. The reversal of 18226604384 is 48340662281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18226604387) 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, 284790662 + ... + 284790725.

It is an arithmetic number, because the mean of its divisors is an integer number (2990302287).

Almost surely, 2^18226604384 is an apocalyptic number.

It is an amenable number.

18226604384 is a deficient number, since it is larger than the sum of its proper divisors (17657023060).

18226604384 is an equidigital number, since it uses as much as digits as its factorization.

18226604384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569581397 (or 569581389 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 18226604384 in words is "eighteen billion, two hundred twenty-six million, six hundred four thousand, three hundred eighty-four".