198061445 has 16 divisors (see below), whose sum is σ = 246795120. Its totient is φ = 152409600.

The previous prime is 198061433. The next prime is 198061469. The reversal of 198061445 is 544160891.

It can be written as a sum of positive squares in 8 ways, for example, as 15108769 + 182952676 = 3887^2 + 13526^2 .

It is not a de Polignac number, because 198061445 - 2⁴ = 198061429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198061399 and 198061408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38315 + ... + 43175.

It is an arithmetic number, because the mean of its divisors is an integer number (15424695).

Almost surely, 2^198061445 is an apocalyptic number.

It is an amenable number.

198061445 is a deficient number, since it is larger than the sum of its proper divisors (48733675).

198061445 is a wasteful number, since it uses less digits than its factorization.

198061445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 198061445 is about 14073.4304631103. The cubic root of 198061445 is about 582.9079534615.

The spelling of 198061445 in words is "one hundred ninety-eight million, sixty-one thousand, four hundred forty-five".