200382181997 has 2 divisors, whose sum is σ = 200382181998. Its totient is φ = 200382181996.

The previous prime is 200382181969. The next prime is 200382182017. The reversal of 200382181997 is 799181283002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200362769161 + 19412836 = 447619^2 + 4406^2 .

It is a cyclic number.

It is not a de Polignac number, because 200382181997 - 2⁶ = 200382181933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200382181927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100191090998 + 100191090999.

It is an arithmetic number, because the mean of its divisors is an integer number (100191090999).

Almost surely, 2^200382181997 is an apocalyptic number.

It is an amenable number.

200382181997 is a deficient number, since it is larger than the sum of its proper divisors (1).

200382181997 is an equidigital number, since it uses as much as digits as its factorization.

200382181997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 200382181997 in words is "two hundred billion, three hundred eighty-two million, one hundred eighty-one thousand, nine hundred ninety-seven".