18209900339 has 4 divisors (see below), whose sum is σ = 18210297456. Its totient is φ = 18209503224.

The previous prime is 18209900281. The next prime is 18209900369. The reversal of 18209900339 is 93300990281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93300990281 = 101 ⋅923772181.

It is a cyclic number.

It is not a de Polignac number, because 18209900339 - 2⁸ = 18209900083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18209900339.

It is not an unprimeable number, because it can be changed into a prime (18209900369) 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, 119204 + ... + 225009.

It is an arithmetic number, because the mean of its divisors is an integer number (4552574364).

Almost surely, 2^18209900339 is an apocalyptic number.

18209900339 is a deficient number, since it is larger than the sum of its proper divisors (397117).

18209900339 is an equidigital number, since it uses as much as digits as its factorization.

18209900339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397116.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 18209900339 in words is "eighteen billion, two hundred nine million, nine hundred thousand, three hundred thirty-nine".