198534407184 has 75 divisors (see below), whose sum is σ = 574662603757. Its totient is φ = 66172788864.

The previous prime is 198534407179. The next prime is 198534407219. The reversal of 198534407184 is 481704435891.

The square root of 198534407184 is 445572.

It is a perfect power (a square), and thus also a powerful number.

198534407184 is a `hidden beast` number, since 1 + 9 + 8 + 53 + 4 + 407 + 184 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22698435600 + 175835971584 = 150660^2 + 419328^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198534407184.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 16034404 + ... + 16046780.

Almost surely, 2^198534407184 is an apocalyptic number.

198534407184 is the 445572-nd square number.

It is an amenable number.

198534407184 is an abundant number, since it is smaller than the sum of its proper divisors (376128196573).

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

198534407184 is an frugal number, since it uses more digits than its factorization.

198534407184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24774 (or 12382 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 198534407184 in words is "one hundred ninety-eight billion, five hundred thirty-four million, four hundred seven thousand, one hundred eighty-four".