198912193 has 2 divisors, whose sum is σ = 198912194. Its totient is φ = 198912192.

The previous prime is 198912167. The next prime is 198912221. The reversal of 198912193 is 391219891.

198912193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182331009 + 16581184 = 13503^2 + 4072^2 .

It is a cyclic number.

It is not a de Polignac number, because 198912193 - 2¹³ = 198904001 is a prime.

It is not a weakly prime, because it can be changed into another prime (198912143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99456096 + 99456097.

It is an arithmetic number, because the mean of its divisors is an integer number (99456097).

Almost surely, 2^198912193 is an apocalyptic number.

It is an amenable number.

198912193 is a deficient number, since it is larger than the sum of its proper divisors (1).

198912193 is an equidigital number, since it uses as much as digits as its factorization.

198912193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 43.

The square root of 198912193 is about 14103.6233996800. The cubic root of 198912193 is about 583.7413639025.

The spelling of 198912193 in words is "one hundred ninety-eight million, nine hundred twelve thousand, one hundred ninety-three".