18683218007 has 2 divisors, whose sum is σ = 18683218008. Its totient is φ = 18683218006.

The previous prime is 18683218003. The next prime is 18683218009. The reversal of 18683218007 is 70081238681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18683218007 - 2² = 18683218003 is a prime.

Together with 18683218009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18683218003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9341609003 + 9341609004.

It is an arithmetic number, because the mean of its divisors is an integer number (9341609004).

Almost surely, 2^18683218007 is an apocalyptic number.

18683218007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18683218007 is an equidigital number, since it uses as much as digits as its factorization.

18683218007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 18683218007 in words is "eighteen billion, six hundred eighty-three million, two hundred eighteen thousand, seven".