9864409818 has 16 divisors (see below), whose sum is σ = 19785679200. Its totient is φ = 3278660016.

The previous prime is 9864409811. The next prime is 9864409829. The reversal of 9864409818 is 8189044689.

It is not an unprimeable number, because it can be changed into a prime (9864409811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2366893 + ... + 2371056.

It is an arithmetic number, because the mean of its divisors is an integer number (1236604950).

Almost surely, 2^9864409818 is an apocalyptic number.

9864409818 is an abundant number, since it is smaller than the sum of its proper divisors (9921269382).

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

9864409818 is a wasteful number, since it uses less digits than its factorization.

9864409818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738301.

The product of its (nonzero) digits is 3981312, while the sum is 57.

The square root of 9864409818 is about 99319.7352896191. The cubic root of 9864409818 is about 2144.6530061771.

The spelling of 9864409818 in words is "nine billion, eight hundred sixty-four million, four hundred nine thousand, eight hundred eighteen".