1818000000216 has 48 divisors (see below), whose sum is σ = 4991198645160. Its totient is φ = 597698628480.

The previous prime is 1818000000199. The next prime is 1818000000259. The reversal of 1818000000216 is 6120000008181.

It is a self number, because there is not a number n which added to its sum of digits gives 1818000000216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172939950 + ... + 172950461.

Almost surely, 2^{1818000000216} is an apocalyptic number.

It is an amenable number.

1818000000216 is an abundant number, since it is smaller than the sum of its proper divisors (3173198644944).

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

1818000000216 is a wasteful number, since it uses less digits than its factorization.

1818000000216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345890496 (or 345890489 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

Adding to 1818000000216 its reverse (6120000008181), we get a palindrome (7938000008397).

The spelling of 1818000000216 in words is "one trillion, eight hundred eighteen billion, two hundred sixteen", and thus it is an aban number.