198063947 has 2 divisors, whose sum is σ = 198063948. Its totient is φ = 198063946.

The previous prime is 198063941. The next prime is 198063949. The reversal of 198063947 is 749360891.

It is a strong prime.

It is an emirp because it is prime and its reverse (749360891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198063947 - 2⁶ = 198063883 is a prime.

Together with 198063949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198063941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99031973 + 99031974.

It is an arithmetic number, because the mean of its divisors is an integer number (99031974).

Almost surely, 2^198063947 is an apocalyptic number.

198063947 is a deficient number, since it is larger than the sum of its proper divisors (1).

198063947 is an equidigital number, since it uses as much as digits as its factorization.

198063947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 198063947 is about 14073.5193537366. The cubic root of 198063947 is about 582.9104079684.

The spelling of 198063947 in words is "one hundred ninety-eight million, sixty-three thousand, nine hundred forty-seven".