9918798285 has 64 divisors (see below), whose sum is σ = 18812067840. Its totient is φ = 4408992000.

The previous prime is 9918798259. The next prime is 9918798287. The reversal of 9918798285 is 5828978199.

It is not a de Polignac number, because 9918798285 - 2⁹ = 9918797773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918798287) 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 63 ways as a sum of consecutive naturals, for example, 46155 + ... + 148215.

It is an arithmetic number, because the mean of its divisors is an integer number (293938560).

Almost surely, 2^9918798285 is an apocalyptic number.

9918798285 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9918798285 is a deficient number, since it is larger than the sum of its proper divisors (8893269555).

9918798285 is a wasteful number, since it uses less digits than its factorization.

9918798285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102130.

The product of its digits is 26127360, while the sum is 66.

The square root of 9918798285 is about 99593.1638467219. The cubic root of 9918798285 is about 2148.5873745647.

The spelling of 9918798285 in words is "nine billion, nine hundred eighteen million, seven hundred ninety-eight thousand, two hundred eighty-five".