18200293202197 has 2 divisors, whose sum is σ = 18200293202198. Its totient is φ = 18200293202196.

The previous prime is 18200293202171. The next prime is 18200293202207. The reversal of 18200293202197 is 79120239200281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17953474019716 + 246819182481 = 4237154^2 + 496809^2 .

It is an emirp because it is prime and its reverse (79120239200281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18200293202197 - 2³⁵ = 18165933463829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18200293202107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9100146601098 + 9100146601099.

It is an arithmetic number, because the mean of its divisors is an integer number (9100146601099).

Almost surely, 2^{18200293202197} is an apocalyptic number.

It is an amenable number.

18200293202197 is a deficient number, since it is larger than the sum of its proper divisors (1).

18200293202197 is an equidigital number, since it uses as much as digits as its factorization.

18200293202197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 18200293202197 in words is "eighteen trillion, two hundred billion, two hundred ninety-three million, two hundred two thousand, one hundred ninety-seven".