2018200018188 has 12 divisors (see below), whose sum is σ = 4709133375800. Its totient is φ = 672733339392.

The previous prime is 2018200018187. The next prime is 2018200018189. The reversal of 2018200018188 is 8818100028102.

It is an interprime number because it is at equal distance from previous prime (2018200018187) and next prime (2018200018189).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2018200018187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84091667413 + ... + 84091667436.

Almost surely, 2^{2018200018188} is an apocalyptic number.

It is an amenable number.

2018200018188 is an abundant number, since it is smaller than the sum of its proper divisors (2690933357612).

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

2018200018188 is a wasteful number, since it uses less digits than its factorization.

2018200018188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168183334856 (or 168183334854 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 39.

The spelling of 2018200018188 in words is "two trillion, eighteen billion, two hundred million, eighteen thousand, one hundred eighty-eight".