198531106 has 16 divisors (see below), whose sum is σ = 303367680. Its totient is φ = 97414480.

The previous prime is 198531089. The next prime is 198531107. The reversal of 198531106 is 601135891.

It is not an unprimeable number, because it can be changed into a prime (198531107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92991 + ... + 95101.

It is an arithmetic number, because the mean of its divisors is an integer number (18960480).

Almost surely, 2^198531106 is an apocalyptic number.

198531106 is a deficient number, since it is larger than the sum of its proper divisors (104836574).

198531106 is a wasteful number, since it uses less digits than its factorization.

198531106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 198531106 is about 14090.1066709944. The cubic root of 198531106 is about 583.3683375638.

Adding to 198531106 its reverse (601135891), we get a palindrome (799666997).

The spelling of 198531106 in words is "one hundred ninety-eight million, five hundred thirty-one thousand, one hundred six".