198512593667 has 2 divisors, whose sum is σ = 198512593668. Its totient is φ = 198512593666.

The previous prime is 198512593663. The next prime is 198512593673. The reversal of 198512593667 is 766395215891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198512593667 - 2² = 198512593663 is a prime.

It is not a weakly prime, because it can be changed into another prime (198512593663) 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, 99256296833 + 99256296834.

It is an arithmetic number, because the mean of its divisors is an integer number (99256296834).

Almost surely, 2^198512593667 is an apocalyptic number.

198512593667 is a deficient number, since it is larger than the sum of its proper divisors (1).

198512593667 is an equidigital number, since it uses as much as digits as its factorization.

198512593667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 62.

The spelling of 198512593667 in words is "one hundred ninety-eight billion, five hundred twelve million, five hundred ninety-three thousand, six hundred sixty-seven".