180318016836 has 72 divisors (see below), whose sum is σ = 483678299104. Its totient is φ = 58708177920.

The previous prime is 180318016829. The next prime is 180318016847. The reversal of 180318016836 is 638610813081.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 180318016791 and 180318016800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2115325 + ... + 2198916.

Almost surely, 2^180318016836 is an apocalyptic number.

It is an amenable number.

180318016836 is an abundant number, since it is smaller than the sum of its proper divisors (303360282268).

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

180318016836 is a wasteful number, since it uses less digits than its factorization.

180318016836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314303 (or 4314289 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 180318016836 in words is "one hundred eighty billion, three hundred eighteen million, sixteen thousand, eight hundred thirty-six".