20018350184 has 16 divisors (see below), whose sum is σ = 42896464800. Its totient is φ = 8579292912.

The previous prime is 20018350181. The next prime is 20018350207. The reversal of 20018350184 is 48105381002.

It is a self number, because there is not a number n which added to its sum of digits gives 20018350184.

It is not an unprimeable number, because it can be changed into a prime (20018350181) 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, 178735214 + ... + 178735325.

It is an arithmetic number, because the mean of its divisors is an integer number (2681029050).

Almost surely, 2^20018350184 is an apocalyptic number.

It is an amenable number.

20018350184 is an abundant number, since it is smaller than the sum of its proper divisors (22878114616).

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

20018350184 is a wasteful number, since it uses less digits than its factorization.

20018350184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357470552 (or 357470548 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 20018350184 in words is "twenty billion, eighteen million, three hundred fifty thousand, one hundred eighty-four".