2222201618 has 96 divisors (see below), whose sum is σ = 4316457600. Its totient is φ = 839075328.

The previous prime is 2222201549. The next prime is 2222201621. The reversal of 2222201618 is 8161022222.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9537230 + ... + 9537462.

It is an arithmetic number, because the mean of its divisors is an integer number (44963100).

Almost surely, 2^2222201618 is an apocalyptic number.

2222201618 is a deficient number, since it is larger than the sum of its proper divisors (2094255982).

2222201618 is a wasteful number, since it uses less digits than its factorization.

2222201618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2222201618 is about 47140.2335378178. The cubic root of 2222201618 is about 1304.9518472370.

The spelling of 2222201618 in words is "two billion, two hundred twenty-two million, two hundred one thousand, six hundred eighteen".