198619147 has 2 divisors, whose sum is σ = 198619148. Its totient is φ = 198619146.

The previous prime is 198619117. The next prime is 198619151. The reversal of 198619147 is 741916891.

198619147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (741916891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198619147 - 2¹⁵ = 198586379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198619097 and 198619106.

It is not a weakly prime, because it can be changed into another prime (198619117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99309573 + 99309574.

It is an arithmetic number, because the mean of its divisors is an integer number (99309574).

Almost surely, 2^198619147 is an apocalyptic number.

198619147 is a deficient number, since it is larger than the sum of its proper divisors (1).

198619147 is an equidigital number, since it uses as much as digits as its factorization.

198619147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 46.

The square root of 198619147 is about 14093.2305380988. The cubic root of 198619147 is about 583.4545587151.

The spelling of 198619147 in words is "one hundred ninety-eight million, six hundred nineteen thousand, one hundred forty-seven".