18192109203 has 24 divisors (see below), whose sum is σ = 26361784800. Its totient is φ = 12089226240.

The previous prime is 18192109183. The next prime is 18192109211. The reversal of 18192109203 is 30290129181.

It is not a de Polignac number, because 18192109203 - 2⁵ = 18192109171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18192109213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6516738 + ... + 6519528.

It is an arithmetic number, because the mean of its divisors is an integer number (1098407700).

Almost surely, 2^18192109203 is an apocalyptic number.

18192109203 is a deficient number, since it is larger than the sum of its proper divisors (8169675597).

18192109203 is a wasteful number, since it uses less digits than its factorization.

18192109203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859 (or 4856 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 18192109203 in words is "eighteen billion, one hundred ninety-two million, one hundred nine thousand, two hundred three".