198099673 has 2 divisors, whose sum is σ = 198099674. Its totient is φ = 198099672.

The previous prime is 198099653. The next prime is 198099677. The reversal of 198099673 is 376990891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146216464 + 51883209 = 12092^2 + 7203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198099673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198099673.

It is not a weakly prime, because it can be changed into another prime (198099677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99049836 + 99049837.

It is an arithmetic number, because the mean of its divisors is an integer number (99049837).

Almost surely, 2^198099673 is an apocalyptic number.

It is an amenable number.

198099673 is a deficient number, since it is larger than the sum of its proper divisors (1).

198099673 is an equidigital number, since it uses as much as digits as its factorization.

198099673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 198099673 is about 14074.7885596907. The cubic root of 198099673 is about 582.9454535612.

The spelling of 198099673 in words is "one hundred ninety-eight million, ninety-nine thousand, six hundred seventy-three".