18405070207 has 2 divisors, whose sum is σ = 18405070208. Its totient is φ = 18405070206.

The previous prime is 18405070153. The next prime is 18405070241. The reversal of 18405070207 is 70207050481.

It is a happy number.

It is an a-pointer prime, because the next prime (18405070241) can be obtained adding 18405070207 to its sum of digits (34).

It is a strong prime.

It is an emirp because it is prime and its reverse (70207050481) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18405070207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18405010207) 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, 9202535103 + 9202535104.

It is an arithmetic number, because the mean of its divisors is an integer number (9202535104).

Almost surely, 2^18405070207 is an apocalyptic number.

18405070207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18405070207 is an equidigital number, since it uses as much as digits as its factorization.

18405070207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

The spelling of 18405070207 in words is "eighteen billion, four hundred five million, seventy thousand, two hundred seven".