18189203339 has 4 divisors (see below), whose sum is σ = 18212026224. Its totient is φ = 18166380456.

The previous prime is 18189203327. The next prime is 18189203353. The reversal of 18189203339 is 93330298181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93330298181 = 243161 ⋅383821.

It is a cyclic number.

It is not a de Polignac number, because 18189203339 - 2³² = 13894236043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18189203293 and 18189203302.

It is not an unprimeable number, because it can be changed into a prime (18189203309) 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 3 ways as a sum of consecutive naturals, for example, 11410247 + ... + 11411840.

It is an arithmetic number, because the mean of its divisors is an integer number (4553006556).

Almost surely, 2^18189203339 is an apocalyptic number.

18189203339 is a deficient number, since it is larger than the sum of its proper divisors (22822885).

18189203339 is an equidigital number, since it uses as much as digits as its factorization.

18189203339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22822884.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 18189203339 in words is "eighteen billion, one hundred eighty-nine million, two hundred three thousand, three hundred thirty-nine".