198612285 has 16 divisors (see below), whose sum is σ = 318548160. Its totient is φ = 105670400.

The previous prime is 198612283. The next prime is 198612287. The reversal of 198612285 is 582216891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198612283) and next prime (198612287).

It is not a de Polignac number, because 198612285 - 2¹ = 198612283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198612283) 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 in 15 ways as a sum of consecutive naturals, for example, 9516 + ... + 22085.

It is an arithmetic number, because the mean of its divisors is an integer number (19909260).

Almost surely, 2^198612285 is an apocalyptic number.

198612285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198612285 is a deficient number, since it is larger than the sum of its proper divisors (119935875).

198612285 is a wasteful number, since it uses less digits than its factorization.

198612285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32028.

The product of its digits is 69120, while the sum is 42.

The square root of 198612285 is about 14092.9870857814. The cubic root of 198612285 is about 583.4478394715.

The spelling of 198612285 in words is "one hundred ninety-eight million, six hundred twelve thousand, two hundred eighty-five".