198434065934347 has 2 divisors, whose sum is σ = 198434065934348. Its totient is φ = 198434065934346.

The previous prime is 198434065934339. The next prime is 198434065934353. The reversal of 198434065934347 is 743439560434891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198434065934347 - 2³ = 198434065934339 is a prime.

It is a super-2 number, since 2×198434065934347² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (198434065934747) 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, 99217032967173 + 99217032967174.

It is an arithmetic number, because the mean of its divisors is an integer number (99217032967174).

Almost surely, 2^{198434065934347} is an apocalyptic number.

198434065934347 is the 8132939-th hex number.

198434065934347 is a deficient number, since it is larger than the sum of its proper divisors (1).

198434065934347 is an equidigital number, since it uses as much as digits as its factorization.

198434065934347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940584960, while the sum is 70.

The spelling of 198434065934347 in words is "one hundred ninety-eight trillion, four hundred thirty-four billion, sixty-five million, nine hundred thirty-four thousand, three hundred forty-seven".