18266318400 has 168 divisors, whose sum is σ = 65377003104. Its totient is φ = 4428185600.

The previous prime is 18266318377. The next prime is 18266318407. The reversal of 18266318400 is 481366281.

It is not an unprimeable number, because it can be changed into a prime (18266318407) 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 in 23 ways as a sum of consecutive naturals, for example, 120177 + ... + 225776.

It is an arithmetic number, because the mean of its divisors is an integer number (389148828).

Almost surely, 2^18266318400 is an apocalyptic number.

18266318400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18266318400 is an abundant number, since it is smaller than the sum of its proper divisors (47110684704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18266318400 is a wasteful number, since it uses less digits than its factorization.

18266318400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345989 (or 345974 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 18266318400 in words is "eighteen billion, two hundred sixty-six million, three hundred eighteen thousand, four hundred".