180018000197999 has 2 divisors, whose sum is σ = 180018000198000. Its totient is φ = 180018000197998.

The previous prime is 180018000197983. The next prime is 180018000198007. The reversal of 180018000197999 is 999791000810081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 180018000197999 - 2⁴ = 180018000197983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180018000197909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90009000098999 + 90009000099000.

It is an arithmetic number, because the mean of its divisors is an integer number (90009000099000).

Almost surely, 2^{180018000197999} is an apocalyptic number.

180018000197999 is a deficient number, since it is larger than the sum of its proper divisors (1).

180018000197999 is an equidigital number, since it uses as much as digits as its factorization.

180018000197999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 62.

The spelling of 180018000197999 in words is "one hundred eighty trillion, eighteen billion, one hundred ninety-seven thousand, nine hundred ninety-nine".