18867340208 has 10 divisors (see below), whose sum is σ = 36555471684. Its totient is φ = 9433670096.

The previous prime is 18867340207. The next prime is 18867340213. The reversal of 18867340208 is 80204376881.

It is not an unprimeable number, because it can be changed into a prime (18867340207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589604366 + ... + 589604397.

Almost surely, 2^18867340208 is an apocalyptic number.

It is an amenable number.

18867340208 is a deficient number, since it is larger than the sum of its proper divisors (17688131476).

18867340208 is a wasteful number, since it uses less digits than its factorization.

18867340208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179208771 (or 1179208765 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 18867340208 in words is "eighteen billion, eight hundred sixty-seven million, three hundred forty thousand, two hundred eight".