18508550800 has 60 divisors (see below), whose sum is σ = 46400155200. Its totient is φ = 7081528960.

The previous prime is 18508550789. The next prime is 18508550803. The reversal of 18508550800 is 805580581.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (18508550803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 996700 + ... + 1015099.

It is an arithmetic number, because the mean of its divisors is an integer number (773335920).

Almost surely, 2^18508550800 is an apocalyptic number.

18508550800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18508550800 is an abundant number, since it is smaller than the sum of its proper divisors (27891604400).

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

18508550800 is a wasteful number, since it uses less digits than its factorization.

18508550800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011840 (or 2011829 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 40.

The spelling of 18508550800 in words is "eighteen billion, five hundred eight million, five hundred fifty thousand, eight hundred".