9872790218 has 16 divisors (see below), whose sum is σ = 15340644000. Its totient is φ = 4759704432.

The previous prime is 9872790199. The next prime is 9872790289. The reversal of 9872790218 is 8120972789.

It is a happy number.

9872790218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9872790218.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 72308 + ... + 158031.

It is an arithmetic number, because the mean of its divisors is an integer number (958790250).

Almost surely, 2^9872790218 is an apocalyptic number.

9872790218 is a deficient number, since it is larger than the sum of its proper divisors (5467853782).

9872790218 is a wasteful number, since it uses less digits than its factorization.

9872790218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231109.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 9872790218 is about 99361.9153297681. The cubic root of 9872790218 is about 2145.2601708246.

The spelling of 9872790218 in words is "nine billion, eight hundred seventy-two million, seven hundred ninety thousand, two hundred eighteen".