18120005839 has 8 divisors (see below), whose sum is σ = 19570093200. Its totient is φ = 16677952896.

The previous prime is 18120005803. The next prime is 18120005867. The reversal of 18120005839 is 93850002181.

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 18120005839 - 2¹³ = 18119997647 is a prime.

It is a super-2 number, since 2×18120005839² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18120005798 and 18120005807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18120005039) 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, 2003914 + ... + 2012935.

It is an arithmetic number, because the mean of its divisors is an integer number (2446261650).

Almost surely, 2^18120005839 is an apocalyptic number.

18120005839 is a deficient number, since it is larger than the sum of its proper divisors (1450087361).

18120005839 is a wasteful number, since it uses less digits than its factorization.

18120005839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017209.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 18120005839 in words is "eighteen billion, one hundred twenty million, five thousand, eight hundred thirty-nine".