198633812 has 36 divisors (see below), whose sum is σ = 382655196. Its totient is φ = 90155520.

The previous prime is 198633811. The next prime is 198633817. The reversal of 198633812 is 218336891.

It can be written as a sum of positive squares in 6 ways, for example, as 128006596 + 70627216 = 11314^2 + 8404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198633812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198633811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38828 + ... + 43644.

It is an arithmetic number, because the mean of its divisors is an integer number (10629311).

Almost surely, 2^198633812 is an apocalyptic number.

It is an amenable number.

198633812 is a deficient number, since it is larger than the sum of its proper divisors (184021384).

198633812 is a wasteful number, since it uses less digits than its factorization.

198633812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908 (or 4893 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 198633812 is about 14093.7508137472. The cubic root of 198633812 is about 583.4689181070.

The spelling of 198633812 in words is "one hundred ninety-eight million, six hundred thirty-three thousand, eight hundred twelve".