18683218207 has 16 divisors (see below), whose sum is σ = 19403366400. Its totient is φ = 17978463360.

The previous prime is 18683218171. The next prime is 18683218231. The reversal of 18683218207 is 70281238681.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18683218207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18683218007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884394 + ... + 905272.

It is an arithmetic number, because the mean of its divisors is an integer number (1212710400).

Almost surely, 2^18683218207 is an apocalyptic number.

18683218207 is a deficient number, since it is larger than the sum of its proper divisors (720148193).

18683218207 is a wasteful number, since it uses less digits than its factorization.

18683218207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21246.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 18683218207 in words is "eighteen billion, six hundred eighty-three million, two hundred eighteen thousand, two hundred seven".