198323473 has 2 divisors, whose sum is σ = 198323474. Its totient is φ = 198323472.

The previous prime is 198323471. The next prime is 198323483. The reversal of 198323473 is 374323891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142253329 + 56070144 = 11927^2 + 7488^2 .

It is a cyclic number.

It is not a de Polignac number, because 198323473 - 2¹ = 198323471 is a prime.

Together with 198323471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (198323471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99161736 + 99161737.

It is an arithmetic number, because the mean of its divisors is an integer number (99161737).

Almost surely, 2^198323473 is an apocalyptic number.

It is an amenable number.

198323473 is a deficient number, since it is larger than the sum of its proper divisors (1).

198323473 is an equidigital number, since it uses as much as digits as its factorization.

198323473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 198323473 is about 14082.7367013660. The cubic root of 198323473 is about 583.1648954407.

The spelling of 198323473 in words is "one hundred ninety-eight million, three hundred twenty-three thousand, four hundred seventy-three".