18199849948207 has 2 divisors, whose sum is σ = 18199849948208. Its totient is φ = 18199849948206.

The previous prime is 18199849948199. The next prime is 18199849948321. The reversal of 18199849948207 is 70284994899181.

It is a weak prime.

It is an emirp because it is prime and its reverse (70284994899181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18199849948207 - 2³ = 18199849948199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18199849948507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9099924974103 + 9099924974104.

It is an arithmetic number, because the mean of its divisors is an integer number (9099924974104).

Almost surely, 2^{18199849948207} is an apocalyptic number.

18199849948207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18199849948207 is an equidigital number, since it uses as much as digits as its factorization.

18199849948207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752467968, while the sum is 79.

The spelling of 18199849948207 in words is "eighteen trillion, one hundred ninety-nine billion, eight hundred forty-nine million, nine hundred forty-eight thousand, two hundred seven".