198128134 has 4 divisors (see below), whose sum is σ = 297192204. Its totient is φ = 99064066.

The previous prime is 198128123. The next prime is 198128137. The reversal of 198128134 is 431821891.

198128134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431821891 = 1033 ⋅418027.

It is a super-3 number, since 3×198128134³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198128093 and 198128102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198128137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49532032 + ... + 49532035.

It is an arithmetic number, because the mean of its divisors is an integer number (74298051).

Almost surely, 2^198128134 is an apocalyptic number.

198128134 is a deficient number, since it is larger than the sum of its proper divisors (99064070).

198128134 is an equidigital number, since it uses as much as digits as its factorization.

198128134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99064069.

The product of its digits is 13824, while the sum is 37.

The square root of 198128134 is about 14075.7995865244. The cubic root of 198128134 is about 582.9733695017.

The spelling of 198128134 in words is "one hundred ninety-eight million, one hundred twenty-eight thousand, one hundred thirty-four".