198132681 has 8 divisors (see below), whose sum is σ = 264258720. Its totient is φ = 132047552.

The previous prime is 198132677. The next prime is 198132713. The reversal of 198132681 is 186231891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198132681 - 2² = 198132677 is a prime.

It is a super-3 number, since 3×198132681³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (198132631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3841 + ... + 20273.

It is an arithmetic number, because the mean of its divisors is an integer number (33032340).

Almost surely, 2^198132681 is an apocalyptic number.

It is an amenable number.

198132681 is a deficient number, since it is larger than the sum of its proper divisors (66126039).

198132681 is a wasteful number, since it uses less digits than its factorization.

198132681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20455.

The product of its digits is 20736, while the sum is 39.

The square root of 198132681 is about 14075.9611039531. The cubic root of 198132681 is about 582.9778291739.

The spelling of 198132681 in words is "one hundred ninety-eight million, one hundred thirty-two thousand, six hundred eighty-one".