198349069 has 2 divisors, whose sum is σ = 198349070. Its totient is φ = 198349068.

The previous prime is 198349043. The next prime is 198349087. The reversal of 198349069 is 960943891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103286569 + 95062500 = 10163^2 + 9750^2 .

It is a cyclic number.

It is not a de Polignac number, because 198349069 - 2¹⁷ = 198217997 is a prime.

It is a super-2 number, since 2×198349069² = 78684706346333522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198349969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99174534 + 99174535.

It is an arithmetic number, because the mean of its divisors is an integer number (99174535).

Almost surely, 2^198349069 is an apocalyptic number.

It is an amenable number.

198349069 is a deficient number, since it is larger than the sum of its proper divisors (1).

198349069 is an equidigital number, since it uses as much as digits as its factorization.

198349069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 198349069 is about 14083.6454442733. The cubic root of 198349069 is about 583.1899824804.

The spelling of 198349069 in words is "one hundred ninety-eight million, three hundred forty-nine thousand, sixty-nine".