133808198 has 4 divisors (see below), whose sum is σ = 200712300. Its totient is φ = 66904098.

The previous prime is 133808177. The next prime is 133808221. The reversal of 133808198 is 891808331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33452048 + ... + 33452051.

It is an arithmetic number, because the mean of its divisors is an integer number (50178075).

Almost surely, 2^133808198 is an apocalyptic number.

133808198 is a deficient number, since it is larger than the sum of its proper divisors (66904102).

133808198 is an equidigital number, since it uses as much as digits as its factorization.

133808198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66904101.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 133808198 is about 11567.5493515265. The cubic root of 133808198 is about 511.4787251386.

The spelling of 133808198 in words is "one hundred thirty-three million, eight hundred eight thousand, one hundred ninety-eight".