18036000008 has 32 divisors (see below), whose sum is σ = 36426351360. Its totient is φ = 8322592320.

The previous prime is 18035999987. The next prime is 18036000019. The reversal of 18036000008 is 80000063081.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587291 + ... + 617237.

It is an arithmetic number, because the mean of its divisors is an integer number (1138323480).

Almost surely, 2^18036000008 is an apocalyptic number.

It is an amenable number.

18036000008 is an abundant number, since it is smaller than the sum of its proper divisors (18390351352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18036000008 is a wasteful number, since it uses less digits than its factorization.

18036000008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35757 (or 35753 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 18036000008 its reverse (80000063081), we get a palindrome (98036063089).

The spelling of 18036000008 in words is "eighteen billion, thirty-six million, eight", and thus it is an aban number and an uban number.