198955307 has 2 divisors, whose sum is σ = 198955308. Its totient is φ = 198955306.

The previous prime is 198955297. The next prime is 198955319. The reversal of 198955307 is 703559891.

It is a weak prime.

It is an emirp because it is prime and its reverse (703559891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198955307 - 2¹⁴ = 198938923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198955357) 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, 99477653 + 99477654.

It is an arithmetic number, because the mean of its divisors is an integer number (99477654).

Almost surely, 2^198955307 is an apocalyptic number.

198955307 is a deficient number, since it is larger than the sum of its proper divisors (1).

198955307 is an equidigital number, since it uses as much as digits as its factorization.

198955307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 198955307 is about 14105.1517893286. The cubic root of 198955307 is about 583.7835359562.

The spelling of 198955307 in words is "one hundred ninety-eight million, nine hundred fifty-five thousand, three hundred seven".