18493819100 has 72 divisors (see below), whose sum is σ = 43700588400. Its totient is φ = 6766502400.

The previous prime is 18493819063. The next prime is 18493819103. The reversal of 18493819100 is 191839481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18493819103) 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, 112721 + ... + 222920.

Almost surely, 2^18493819100 is an apocalyptic number.

18493819100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18493819100 is an abundant number, since it is smaller than the sum of its proper divisors (25206769300).

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

18493819100 is a wasteful number, since it uses less digits than its factorization.

18493819100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335703 (or 335696 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 18493819100 in words is "eighteen billion, four hundred ninety-three million, eight hundred nineteen thousand, one hundred".