198583873 has 2 divisors, whose sum is σ = 198583874. Its totient is φ = 198583872.

The previous prime is 198583867. The next prime is 198583901. The reversal of 198583873 is 378385891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184090624 + 14493249 = 13568^2 + 3807^2 .

It is a cyclic number.

It is not a de Polignac number, because 198583873 - 2⁵ = 198583841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198583873.

It is not a weakly prime, because it can be changed into another prime (198583813) 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, 99291936 + 99291937.

It is an arithmetic number, because the mean of its divisors is an integer number (99291937).

Almost surely, 2^198583873 is an apocalyptic number.

It is an amenable number.

198583873 is a deficient number, since it is larger than the sum of its proper divisors (1).

198583873 is an equidigital number, since it uses as much as digits as its factorization.

198583873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The square root of 198583873 is about 14091.9790306401. The cubic root of 198583873 is about 583.4200169050.

It can be divided in two parts, 1985 and 83873, that added together give a palindrome (85858).

The spelling of 198583873 in words is "one hundred ninety-eight million, five hundred eighty-three thousand, eight hundred seventy-three".