198292851671 has 2 divisors, whose sum is σ = 198292851672. Its totient is φ = 198292851670.

The previous prime is 198292851637. The next prime is 198292851761. The reversal of 198292851671 is 176158292891.

Together with next prime (198292851761) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198292851671 - 2⁶ = 198292851607 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198292851671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198292851371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99146425835 + 99146425836.

It is an arithmetic number, because the mean of its divisors is an integer number (99146425836).

Almost surely, 2^198292851671 is an apocalyptic number.

198292851671 is a deficient number, since it is larger than the sum of its proper divisors (1).

198292851671 is an equidigital number, since it uses as much as digits as its factorization.

198292851671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 59.

The spelling of 198292851671 in words is "one hundred ninety-eight billion, two hundred ninety-two million, eight hundred fifty-one thousand, six hundred seventy-one".