4345216818 has 64 divisors (see below), whose sum is σ = 9397987200. Its totient is φ = 1334845440.

The previous prime is 4345216817. The next prime is 4345216873. The reversal of 4345216818 is 8186125434.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4345216818.

It is not an unprimeable number, because it can be changed into a prime (4345216817) 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, 1910530 + ... + 1912802.

It is an arithmetic number, because the mean of its divisors is an integer number (146843550).

Almost surely, 2^4345216818 is an apocalyptic number.

4345216818 is an abundant number, since it is smaller than the sum of its proper divisors (5052770382).

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

4345216818 is a wasteful number, since it uses less digits than its factorization.

4345216818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

The product of its digits is 184320, while the sum is 42.

The square root of 4345216818 is about 65918.2586086738. The cubic root of 4345216818 is about 1631.8133579749.

The spelling of 4345216818 in words is "four billion, three hundred forty-five million, two hundred sixteen thousand, eight hundred eighteen".