198134971 has 4 divisors (see below), whose sum is σ = 198163152. Its totient is φ = 198106792.

The previous prime is 198134969. The next prime is 198134987. The reversal of 198134971 is 179431891.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 198134971 - 2¹ = 198134969 is a prime.

It is a super-3 number, since 3×198134971³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198134171) 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, 6105 + ... + 20821.

It is an arithmetic number, because the mean of its divisors is an integer number (49540788).

Almost surely, 2^198134971 is an apocalyptic number.

198134971 is a deficient number, since it is larger than the sum of its proper divisors (28181).

198134971 is a wasteful number, since it uses less digits than its factorization.

198134971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28180.

The product of its digits is 54432, while the sum is 43.

The square root of 198134971 is about 14076.0424480747. The cubic root of 198134971 is about 582.9800751673.

The spelling of 198134971 in words is "one hundred ninety-eight million, one hundred thirty-four thousand, nine hundred seventy-one".