198695068387 has 2 divisors, whose sum is σ = 198695068388. Its totient is φ = 198695068386.

The previous prime is 198695068379. The next prime is 198695068393. The reversal of 198695068387 is 783860596891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198695068387 - 2³ = 198695068379 is a prime.

It is not a weakly prime, because it can be changed into another prime (198695068307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99347534193 + 99347534194.

It is an arithmetic number, because the mean of its divisors is an integer number (99347534194).

Almost surely, 2^198695068387 is an apocalyptic number.

198695068387 is a deficient number, since it is larger than the sum of its proper divisors (1).

198695068387 is an equidigital number, since it uses as much as digits as its factorization.

198695068387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156764160, while the sum is 70.

The spelling of 198695068387 in words is "one hundred ninety-eight billion, six hundred ninety-five million, sixty-eight thousand, three hundred eighty-seven".