198542933 has 2 divisors, whose sum is σ = 198542934. Its totient is φ = 198542932.

The previous prime is 198542917. The next prime is 198542977. The reversal of 198542933 is 339245891.

It is an a-pointer prime, because the next prime (198542977) can be obtained adding 198542933 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196056004 + 2486929 = 14002^2 + 1577^2 .

It is an emirp because it is prime and its reverse (339245891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198542933 - 2⁴ = 198542917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198542633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99271466 + 99271467.

It is an arithmetic number, because the mean of its divisors is an integer number (99271467).

Almost surely, 2^198542933 is an apocalyptic number.

It is an amenable number.

198542933 is a deficient number, since it is larger than the sum of its proper divisors (1).

198542933 is an equidigital number, since it uses as much as digits as its factorization.

198542933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 198542933 is about 14090.5263563857. The cubic root of 198542933 is about 583.3799215762.

The spelling of 198542933 in words is "one hundred ninety-eight million, five hundred forty-two thousand, nine hundred thirty-three".