198133144530 has 32 divisors (see below), whose sum is σ = 478668693888. Its totient is φ = 52485600000.

The previous prime is 198133144519. The next prime is 198133144537. The reversal of 198133144530 is 35441331891.

It is a super-3 number, since 3×198133144530³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (198133144537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21864471 + ... + 21873530.

It is an arithmetic number, because the mean of its divisors is an integer number (14958396684).

Almost surely, 2^198133144530 is an apocalyptic number.

198133144530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198133144530 is an abundant number, since it is smaller than the sum of its proper divisors (280535549358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198133144530 is a wasteful number, since it uses less digits than its factorization.

198133144530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43738162.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 198133144530 in words is "one hundred ninety-eight billion, one hundred thirty-three million, one hundred forty-four thousand, five hundred thirty".