18414819198 has 48 divisors (see below), whose sum is σ = 40297720320. Its totient is φ = 6076972368.

The previous prime is 18414819193. The next prime is 18414819223. The reversal of 18414819198 is 89191841481.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18414819191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5813011 + ... + 5816177.

It is an arithmetic number, because the mean of its divisors is an integer number (839535840).

Almost surely, 2^18414819198 is an apocalyptic number.

18414819198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18414819198 is an abundant number, since it is smaller than the sum of its proper divisors (21882901122).

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

18414819198 is a wasteful number, since it uses less digits than its factorization.

18414819198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6301 (or 6298 counting only the distinct ones).

The product of its digits is 663552, while the sum is 54.

The spelling of 18414819198 in words is "eighteen billion, four hundred fourteen million, eight hundred nineteen thousand, one hundred ninety-eight".