3220212618 has 32 divisors (see below), whose sum is σ = 8178318720. Its totient is φ = 920060640.

The previous prime is 3220212617. The next prime is 3220212659. The reversal of 3220212618 is 8162120223.

3220212618 is a `hidden beast` number, since 3 + 2 + 20 + 21 + 2 + 618 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3220212591 and 3220212600.

It is not an unprimeable number, because it can be changed into a prime (3220212617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4259163 + ... + 4259918.

It is an arithmetic number, because the mean of its divisors is an integer number (255572460).

Almost surely, 2^3220212618 is an apocalyptic number.

3220212618 is an abundant number, since it is smaller than the sum of its proper divisors (4958106102).

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

3220212618 is a wasteful number, since it uses less digits than its factorization.

3220212618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8519099 (or 8519093 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 3220212618 is about 56746.9172554774. The cubic root of 3220212618 is about 1476.7087530758.

The spelling of 3220212618 in words is "three billion, two hundred twenty million, two hundred twelve thousand, six hundred eighteen".