198812156 has 6 divisors (see below), whose sum is σ = 347921280. Its totient is φ = 99406076.

The previous prime is 198812153. The next prime is 198812167. The reversal of 198812156 is 651218891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198812153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24851516 + ... + 24851523.

It is an arithmetic number, because the mean of its divisors is an integer number (57986880).

Almost surely, 2^198812156 is an apocalyptic number.

It is an amenable number.

198812156 is a deficient number, since it is larger than the sum of its proper divisors (149109124).

198812156 is a wasteful number, since it uses less digits than its factorization.

198812156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49703043 (or 49703041 counting only the distinct ones).

The product of its digits is 34560, while the sum is 41.

The square root of 198812156 is about 14100.0764536934. The cubic root of 198812156 is about 583.6434890125.

The spelling of 198812156 in words is "one hundred ninety-eight million, eight hundred twelve thousand, one hundred fifty-six".