198127330813 has 2 divisors, whose sum is σ = 198127330814. Its totient is φ = 198127330812.

The previous prime is 198127330763. The next prime is 198127330831. The reversal of 198127330813 is 318033721891.

Together with next prime (198127330831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192170887129 + 5956443684 = 438373^2 + 77178^2 .

It is a cyclic number.

It is not a de Polignac number, because 198127330813 - 2¹³ = 198127322621 is a prime.

It is a super-3 number, since 3×198127330813³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198127310813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99063665406 + 99063665407.

It is an arithmetic number, because the mean of its divisors is an integer number (99063665407).

Almost surely, 2^198127330813 is an apocalyptic number.

It is an amenable number.

198127330813 is a deficient number, since it is larger than the sum of its proper divisors (1).

198127330813 is an equidigital number, since it uses as much as digits as its factorization.

198127330813 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 198127330813 in words is "one hundred ninety-eight billion, one hundred twenty-seven million, three hundred thirty thousand, eight hundred thirteen".