198609532 has 24 divisors (see below), whose sum is σ = 379577520. Its totient is φ = 90178560.

The previous prime is 198609511. The next prime is 198609539. The reversal of 198609532 is 235906891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198609539) 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, 51694 + ... + 55402.

It is an arithmetic number, because the mean of its divisors is an integer number (15815730).

Almost surely, 2^198609532 is an apocalyptic number.

It is an amenable number.

198609532 is a deficient number, since it is larger than the sum of its proper divisors (180967988).

198609532 is a wasteful number, since it uses less digits than its factorization.

198609532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4941 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 198609532 is about 14092.8894127500. The cubic root of 198609532 is about 583.4451437012.

It can be divided in two parts, 19860 and 9532, that added together give a palindrome (29392).

The spelling of 198609532 in words is "one hundred ninety-eight million, six hundred nine thousand, five hundred thirty-two".