198382993 has 2 divisors, whose sum is σ = 198382994. Its totient is φ = 198382992.

The previous prime is 198382949. The next prime is 198383021. The reversal of 198382993 is 399283891.

198382993 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 can be written as a sum of positive squares in only one way, i.e., 121154049 + 77228944 = 11007^2 + 8788^2 .

It is an emirp because it is prime and its reverse (399283891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198382993 - 2²⁵ = 164828561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198382993.

It is not a weakly prime, because it can be changed into another prime (198389993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99191496 + 99191497.

It is an arithmetic number, because the mean of its divisors is an integer number (99191497).

Almost surely, 2^198382993 is an apocalyptic number.

It is an amenable number.

198382993 is a deficient number, since it is larger than the sum of its proper divisors (1).

198382993 is an equidigital number, since it uses as much as digits as its factorization.

198382993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 52.

The square root of 198382993 is about 14084.8497684569. The cubic root of 198382993 is about 583.2232285976.

The spelling of 198382993 in words is "one hundred ninety-eight million, three hundred eighty-two thousand, nine hundred ninety-three".