198403684037941 has 2 divisors, whose sum is σ = 198403684037942. Its totient is φ = 198403684037940.

The previous prime is 198403684037921. The next prime is 198403684038017. The reversal of 198403684037941 is 149730486304891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198305681231025 + 98002806916 = 14082105^2 + 313054^2 .

It is an emirp because it is prime and its reverse (149730486304891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198403684037941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198403684037921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99201842018970 + 99201842018971.

It is an arithmetic number, because the mean of its divisors is an integer number (99201842018971).

Almost surely, 2^{198403684037941} is an apocalyptic number.

It is an amenable number.

198403684037941 is a deficient number, since it is larger than the sum of its proper divisors (1).

198403684037941 is an equidigital number, since it uses as much as digits as its factorization.

198403684037941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125411328, while the sum is 67.

The spelling of 198403684037941 in words is "one hundred ninety-eight trillion, four hundred three billion, six hundred eighty-four million, thirty-seven thousand, nine hundred forty-one".