18198518200 has 48 divisors (see below), whose sum is σ = 42533170560. Its totient is φ = 7241280000.

The previous prime is 18198518197. The next prime is 18198518201. The reversal of 18198518200 is 281589181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18198518201) 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 11 ways as a sum of consecutive naturals, for example, 200001 + ... + 276400.

It is an arithmetic number, because the mean of its divisors is an integer number (886107720).

Almost surely, 2^18198518200 is an apocalyptic number.

18198518200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18198518200 is an abundant number, since it is smaller than the sum of its proper divisors (24334652360).

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

18198518200 is a wasteful number, since it uses less digits than its factorization.

18198518200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476608 (or 476599 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 43.

The spelling of 18198518200 in words is "eighteen billion, one hundred ninety-eight million, five hundred eighteen thousand, two hundred".