198134403 has 4 divisors (see below), whose sum is σ = 264179208. Its totient is φ = 132089600.

The previous prime is 198134383. The next prime is 198134429. The reversal of 198134403 is 304431891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304431891 = 3 ⋅101477297.

It is a cyclic number.

It is not a de Polignac number, because 198134403 - 2¹² = 198130307 is a prime.

It is a super-3 number, since 3×198134403³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198130403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33022398 + ... + 33022403.

It is an arithmetic number, because the mean of its divisors is an integer number (66044802).

Almost surely, 2^198134403 is an apocalyptic number.

198134403 is a deficient number, since it is larger than the sum of its proper divisors (66044805).

198134403 is an equidigital number, since it uses as much as digits as its factorization.

198134403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66044804.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 198134403 is about 14076.0222719346. The cubic root of 198134403 is about 582.9795180841.

The spelling of 198134403 in words is "one hundred ninety-eight million, one hundred thirty-four thousand, four hundred three".