195557198 has 8 divisors (see below), whose sum is σ = 293546208. Its totient is φ = 97708464.

The previous prime is 195557191. The next prime is 195557203. The reversal of 195557198 is 891755591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×195557198² = 76485235379222408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195557191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31511 + ... + 37202.

It is an arithmetic number, because the mean of its divisors is an integer number (36693276).

Almost surely, 2^195557198 is an apocalyptic number.

195557198 is a deficient number, since it is larger than the sum of its proper divisors (97989010).

195557198 is a wasteful number, since it uses less digits than its factorization.

195557198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70138.

The product of its digits is 567000, while the sum is 50.

The square root of 195557198 is about 13984.1767008287. The cubic root of 195557198 is about 580.4408044169.

The spelling of 195557198 in words is "one hundred ninety-five million, five hundred fifty-seven thousand, one hundred ninety-eight".