219298333849 has 45 divisors (see below), whose sum is σ = 270544256853. Its totient is φ = 177722813016.

The previous prime is 219298333843. The next prime is 219298333861. The reversal of 219298333849 is 948333892912.

The square root of 219298333849 is 468293.

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

It is not a de Polignac number, because 219298333849 - 2³¹ = 217150850201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219298333843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 435980532 + ... + 435981034.

Almost surely, 2^219298333849 is an apocalyptic number.

219298333849 is the 468293-rd square number.

219298333849 is the 234147-th centered octagonal number.

It is an amenable number.

219298333849 is a deficient number, since it is larger than the sum of its proper divisors (51245923004).

219298333849 is an frugal number, since it uses more digits than its factorization.

219298333849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 529 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 61.

The spelling of 219298333849 in words is "two hundred nineteen billion, two hundred ninety-eight million, three hundred thirty-three thousand, eight hundred forty-nine".