18626839118 has 12 divisors (see below), whose sum is σ = 28843221408. Its totient is φ = 9012466680.

The previous prime is 18626839111. The next prime is 18626839129. The reversal of 18626839118 is 81193862681.

It is a self number, because there is not a number n which added to its sum of digits gives 18626839118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18626839111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1065980 + ... + 1083312.

It is an arithmetic number, because the mean of its divisors is an integer number (2403601784).

Almost surely, 2^18626839118 is an apocalyptic number.

18626839118 is a deficient number, since it is larger than the sum of its proper divisors (10216382290).

18626839118 is an frugal number, since it uses more digits than its factorization.

18626839118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34699 (or 17366 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The spelling of 18626839118 in words is "eighteen billion, six hundred twenty-six million, eight hundred thirty-nine thousand, one hundred eighteen".