198834812 has 24 divisors (see below), whose sum is σ = 380340912. Its totient is φ = 90201600.

The previous prime is 198834809. The next prime is 198834859. The reversal of 198834812 is 218438891.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19628 + ... + 27980.

It is an arithmetic number, because the mean of its divisors is an integer number (15847538).

Almost surely, 2^198834812 is an apocalyptic number.

It is an amenable number.

198834812 is a deficient number, since it is larger than the sum of its proper divisors (181506100).

198834812 is a wasteful number, since it uses less digits than its factorization.

198834812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8909 (or 8907 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The square root of 198834812 is about 14100.8798307056. The cubic root of 198834812 is about 583.6656582214.

The spelling of 198834812 in words is "one hundred ninety-eight million, eight hundred thirty-four thousand, eight hundred twelve".