18498073203 has 6 divisors (see below), whose sum is σ = 26719439084. Its totient is φ = 12332048796.

The previous prime is 18498073193. The next prime is 18498073211. The reversal of 18498073203 is 30237089481.

It is not a de Polignac number, because 18498073203 - 2⁵ = 18498073171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18498073273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1027670725 + ... + 1027670742.

Almost surely, 2^18498073203 is an apocalyptic number.

18498073203 is a deficient number, since it is larger than the sum of its proper divisors (8221365881).

18498073203 is a wasteful number, since it uses less digits than its factorization.

18498073203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055341473 (or 2055341470 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 18498073203 in words is "eighteen billion, four hundred ninety-eight million, seventy-three thousand, two hundred three".