18867340207 has 2 divisors, whose sum is σ = 18867340208. Its totient is φ = 18867340206.

The previous prime is 18867340183. The next prime is 18867340213. The reversal of 18867340207 is 70204376881.

It is a strong prime.

It is an emirp because it is prime and its reverse (70204376881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18867340207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18867340267) 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, 9433670103 + 9433670104.

It is an arithmetic number, because the mean of its divisors is an integer number (9433670104).

Almost surely, 2^18867340207 is an apocalyptic number.

18867340207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18867340207 is an equidigital number, since it uses as much as digits as its factorization.

18867340207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 18867340207 in words is "eighteen billion, eight hundred sixty-seven million, three hundred forty thousand, two hundred seven".