9800491278 has 32 divisors (see below), whose sum is σ = 19666231200. Its totient is φ = 3255975936.

The previous prime is 9800491273. The next prime is 9800491297. The reversal of 9800491278 is 8721940089.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9800491273) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2623500 + ... + 2627232.

It is an arithmetic number, because the mean of its divisors is an integer number (614569725).

Almost surely, 2^9800491278 is an apocalyptic number.

9800491278 is an abundant number, since it is smaller than the sum of its proper divisors (9865739922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9800491278 is a wasteful number, since it uses less digits than its factorization.

9800491278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 9800491278 is about 98997.4306636288. The cubic root of 9800491278 is about 2140.0107198054.

The spelling of 9800491278 in words is "nine billion, eight hundred million, four hundred ninety-one thousand, two hundred seventy-eight".