198756974023 has 2 divisors, whose sum is σ = 198756974024. Its totient is φ = 198756974022.

The previous prime is 198756973999. The next prime is 198756974081. The reversal of 198756974023 is 320479657891.

It is a weak prime.

It is an emirp because it is prime and its reverse (320479657891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198756974023 - 2⁹ = 198756973511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198756974093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99378487011 + 99378487012.

It is an arithmetic number, because the mean of its divisors is an integer number (99378487012).

It is a 1-persistent number, because it is pandigital, but 2⋅198756974023 = 397513948046 is not.

Almost surely, 2^198756974023 is an apocalyptic number.

198756974023 is a deficient number, since it is larger than the sum of its proper divisors (1).

198756974023 is an equidigital number, since it uses as much as digits as its factorization.

198756974023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 61.

The spelling of 198756974023 in words is "one hundred ninety-eight billion, seven hundred fifty-six million, nine hundred seventy-four thousand, twenty-three".