981865298 has 6 divisors (see below), whose sum is σ = 1472864421. Its totient is φ = 490910492.

The previous prime is 981865289. The next prime is 981865303. The reversal of 981865298 is 892568189.

It can be written as a sum of positive squares in 2 ways, for example, as 837697249 + 144168049 = 28943^2 + 12007^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=22157.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 33236 + ... + 55392.

Almost surely, 2^981865298 is an apocalyptic number.

981865298 is a deficient number, since it is larger than the sum of its proper divisors (490999123).

981865298 is an frugal number, since it uses more digits than its factorization.

981865298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44316 (or 22159 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 56.

The square root of 981865298 is about 31334.7299015007. The cubic root of 981865298 is about 993.9181858557.

The spelling of 981865298 in words is "nine hundred eighty-one million, eight hundred sixty-five thousand, two hundred ninety-eight".