2218165746 has 48 divisors (see below), whose sum is σ = 4875258240. Its totient is φ = 671883520.

The previous prime is 2218165739. The next prime is 2218165769. The reversal of 2218165746 is 6475618122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2218165698 and 2218165707.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28231 + ... + 72341.

It is an arithmetic number, because the mean of its divisors is an integer number (101567880).

Almost surely, 2^2218165746 is an apocalyptic number.

2218165746 is an abundant number, since it is smaller than the sum of its proper divisors (2657092494).

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

2218165746 is a wasteful number, since it uses less digits than its factorization.

2218165746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44179 (or 44162 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2218165746 is about 47097.4069986873. The cubic root of 2218165746 is about 1304.1613683805.

The spelling of 2218165746 in words is "two billion, two hundred eighteen million, one hundred sixty-five thousand, seven hundred forty-six".