195888198 has 32 divisors (see below), whose sum is σ = 436492800. Its totient is φ = 58096160.

The previous prime is 195888193. The next prime is 195888211. The reversal of 195888198 is 891888591.

It is a super-2 number, since 2×195888198² = 76744372231374408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195888193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28473 + ... + 34676.

It is an arithmetic number, because the mean of its divisors is an integer number (13640400).

Almost surely, 2^195888198 is an apocalyptic number.

195888198 is an abundant number, since it is smaller than the sum of its proper divisors (240604602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195888198 is a wasteful number, since it uses less digits than its factorization.

195888198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63212.

The product of its digits is 1658880, while the sum is 57.

The square root of 195888198 is about 13996.0065018562. The cubic root of 195888198 is about 580.7681044134.

The spelling of 195888198 in words is "one hundred ninety-five million, eight hundred eighty-eight thousand, one hundred ninety-eight".