198775312 has 10 divisors (see below), whose sum is σ = 385127198. Its totient is φ = 99387648.

The previous prime is 198775301. The next prime is 198775319. The reversal of 198775312 is 213577891.

It can be written as a sum of positive squares in only one way, i.e., 181602576 + 17172736 = 13476^2 + 4144^2 .

It is not an unprimeable number, because it can be changed into a prime (198775319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211713 + ... + 6211744.

Almost surely, 2^198775312 is an apocalyptic number.

It is an amenable number.

198775312 is a deficient number, since it is larger than the sum of its proper divisors (186351886).

198775312 is a wasteful number, since it uses less digits than its factorization.

198775312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12423465 (or 12423459 counting only the distinct ones).

The product of its digits is 105840, while the sum is 43.

The square root of 198775312 is about 14098.7698754182. The cubic root of 198775312 is about 583.6074330529.

The spelling of 198775312 in words is "one hundred ninety-eight million, seven hundred seventy-five thousand, three hundred twelve".