9998573281 has 32 divisors (see below), whose sum is σ = 11264198400. Its totient is φ = 8833950720.

The previous prime is 9998573269. The next prime is 9998573293. The reversal of 9998573281 is 1823758999.

9998573281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9998573269) and next prime (9998573293).

It is a cyclic number.

It is not a de Polignac number, because 9998573281 - 2²¹ = 9996476129 is a prime.

It is a super-2 number, since 2×9998573281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9998573201) 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 in 31 ways as a sum of consecutive naturals, for example, 2324725 + ... + 2329021.

It is an arithmetic number, because the mean of its divisors is an integer number (352006200).

Almost surely, 2^9998573281 is an apocalyptic number.

It is an amenable number.

9998573281 is a deficient number, since it is larger than the sum of its proper divisors (1265625119).

9998573281 is a wasteful number, since it uses less digits than its factorization.

9998573281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489.

The product of its digits is 9797760, while the sum is 61.

The square root of 9998573281 is about 99992.8661505410. The cubic root of 9998573281 is about 2154.3322260619.

The spelling of 9998573281 in words is "nine billion, nine hundred ninety-eight million, five hundred seventy-three thousand, two hundred eighty-one".