18508422268018 has 8 divisors (see below), whose sum is σ = 27764408439900. Its totient is φ = 9253619454720.

The previous prime is 18508422268013. The next prime is 18508422268031. The reversal of 18508422268018 is 81086222480581.

It can be written as a sum of positive squares in 2 ways, for example, as 18373936509289 + 134485758729 = 4286483^2 + 366723^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18508422268018.

It is not an unprimeable number, because it can be changed into a prime (18508422268013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295800543 + ... + 295863106.

Almost surely, 2^{18508422268018} is an apocalyptic number.

18508422268018 is a deficient number, since it is larger than the sum of its proper divisors (9255986171882).

18508422268018 is a wasteful number, since it uses less digits than its factorization.

18508422268018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591679292.

The product of its (nonzero) digits is 3932160, while the sum is 55.

The spelling of 18508422268018 in words is "eighteen trillion, five hundred eight billion, four hundred twenty-two million, two hundred sixty-eight thousand, eighteen".