198013562409613 has 2 divisors, whose sum is σ = 198013562409614. Its totient is φ = 198013562409612.

The previous prime is 198013562409589. The next prime is 198013562409643. The reversal of 198013562409613 is 316904265310891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163862605579689 + 34150956829924 = 12800883^2 + 5843882^2 .

It is a cyclic number.

It is not a de Polignac number, because 198013562409613 - 2⁹ = 198013562409101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198013562409643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99006781204806 + 99006781204807.

It is an arithmetic number, because the mean of its divisors is an integer number (99006781204807).

Almost surely, 2^{198013562409613} is an apocalyptic number.

It is an amenable number.

198013562409613 is a deficient number, since it is larger than the sum of its proper divisors (1).

198013562409613 is an equidigital number, since it uses as much as digits as its factorization.

198013562409613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 198013562409613 in words is "one hundred ninety-eight trillion, thirteen billion, five hundred sixty-two million, four hundred nine thousand, six hundred thirteen".