210218007818 has 32 divisors (see below), whose sum is σ = 395417344896. Its totient is φ = 81594047808.

The previous prime is 210218007817. The next prime is 210218007821. The reversal of 210218007818 is 818700812012.

210218007818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210218007818² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210218007817) 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 15 ways as a sum of consecutive naturals, for example, 10886996 + ... + 10906287.

It is an arithmetic number, because the mean of its divisors is an integer number (12356792028).

Almost surely, 2^210218007818 is an apocalyptic number.

210218007818 is a deficient number, since it is larger than the sum of its proper divisors (185199337078).

210218007818 is a wasteful number, since it uses less digits than its factorization.

210218007818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21793358.

The product of its (nonzero) digits is 14336, while the sum is 38.

The spelling of 210218007818 in words is "two hundred ten billion, two hundred eighteen million, seven thousand, eight hundred eighteen".