18140385239 has 8 divisors (see below), whose sum is σ = 18203811840. Its totient is φ = 18077031000.

The previous prime is 18140385229. The next prime is 18140385247. The reversal of 18140385239 is 93258304181.

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 18140385239 - 2¹² = 18140381143 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 18140385239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18140385229) 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 7 ways as a sum of consecutive naturals, for example, 510914 + ... + 545264.

It is an arithmetic number, because the mean of its divisors is an integer number (2275476480).

Almost surely, 2^18140385239 is an apocalyptic number.

18140385239 is a deficient number, since it is larger than the sum of its proper divisors (63426601).

18140385239 is a wasteful number, since it uses less digits than its factorization.

18140385239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36181.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 18140385239 in words is "eighteen billion, one hundred forty million, three hundred eighty-five thousand, two hundred thirty-nine".