198124589 has 4 divisors (see below), whose sum is σ = 213364956. Its totient is φ = 182884224.

The previous prime is 198124567. The next prime is 198124601. The reversal of 198124589 is 985421891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41499364 + 156625225 = 6442^2 + 12515^2 .

It is a cyclic number.

It is not a de Polignac number, because 198124589 - 2¹² = 198120493 is a prime.

It is a super-3 number, since 3×198124589³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198124559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7620164 + ... + 7620189.

It is an arithmetic number, because the mean of its divisors is an integer number (53341239).

Almost surely, 2^198124589 is an apocalyptic number.

It is an amenable number.

198124589 is a deficient number, since it is larger than the sum of its proper divisors (15240367).

198124589 is a wasteful number, since it uses less digits than its factorization.

198124589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15240366.

The product of its digits is 207360, while the sum is 47.

The square root of 198124589 is about 14075.6736606104. The cubic root of 198124589 is about 582.9698925381.

The spelling of 198124589 in words is "one hundred ninety-eight million, one hundred twenty-four thousand, five hundred eighty-nine".