18421304239 has 8 divisors (see below), whose sum is σ = 19841259312. Its totient is φ = 17001768000.

The previous prime is 18421304201. The next prime is 18421304243. The reversal of 18421304239 is 93240312481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18421304239 - 2¹⁷ = 18421173167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18421304198 and 18421304207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18421304249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10189 + ... + 192214.

It is an arithmetic number, because the mean of its divisors is an integer number (2480157414).

Almost surely, 2^18421304239 is an apocalyptic number.

18421304239 is a deficient number, since it is larger than the sum of its proper divisors (1419955073).

18421304239 is a wasteful number, since it uses less digits than its factorization.

18421304239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209417.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 18421304239 in words is "eighteen billion, four hundred twenty-one million, three hundred four thousand, two hundred thirty-nine".