198145741 has 2 divisors, whose sum is σ = 198145742. Its totient is φ = 198145740.

The previous prime is 198145721. The next prime is 198145771. The reversal of 198145741 is 147541891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197290116 + 855625 = 14046^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 198145741 - 2⁵ = 198145709 is a prime.

It is a super-3 number, since 3×198145741³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198145694 and 198145703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198145721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99072870 + 99072871.

It is an arithmetic number, because the mean of its divisors is an integer number (99072871).

Almost surely, 2^198145741 is an apocalyptic number.

It is an amenable number.

198145741 is a deficient number, since it is larger than the sum of its proper divisors (1).

198145741 is an equidigital number, since it uses as much as digits as its factorization.

198145741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 198145741 is about 14076.4250077923. The cubic root of 198145741 is about 582.9906379698.

The spelling of 198145741 in words is "one hundred ninety-eight million, one hundred forty-five thousand, seven hundred forty-one".