998565000197 has 2 divisors, whose sum is σ = 998565000198. Its totient is φ = 998565000196.

The previous prime is 998565000161. The next prime is 998565000227. The reversal of 998565000197 is 791000565899.

998565000197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952665794116 + 45899206081 = 976046^2 + 214241^2 .

It is an emirp because it is prime and its reverse (791000565899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998565000197 - 2¹⁸ = 998564738053 is a prime.

It is a super-2 number, since 2×998565000197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998565000157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499282500098 + 499282500099.

It is an arithmetic number, because the mean of its divisors is an integer number (499282500099).

Almost surely, 2^998565000197 is an apocalyptic number.

It is an amenable number.

998565000197 is a deficient number, since it is larger than the sum of its proper divisors (1).

998565000197 is an equidigital number, since it uses as much as digits as its factorization.

998565000197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 59.

The spelling of 998565000197 in words is "nine hundred ninety-eight billion, five hundred sixty-five million, one hundred ninety-seven", and thus it is an aban number.