18068459639 has 8 divisors (see below), whose sum is σ = 19648373328. Its totient is φ = 16545997440.

The previous prime is 18068459611. The next prime is 18068459653. The reversal of 18068459639 is 93695486081.

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

It is not a de Polignac number, because 18068459639 - 2¹² = 18068455543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18068459039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14362217 + ... + 14363474.

It is an arithmetic number, because the mean of its divisors is an integer number (2456046666).

Almost surely, 2^18068459639 is an apocalyptic number.

18068459639 is a deficient number, since it is larger than the sum of its proper divisors (1579913689).

18068459639 is a wasteful number, since it uses less digits than its factorization.

18068459639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28725745.

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 18068459639 in words is "eighteen billion, sixty-eight million, four hundred fifty-nine thousand, six hundred thirty-nine".