2222003645 has 4 divisors (see below), whose sum is σ = 2666404380. Its totient is φ = 1777602912.

The previous prime is 2222003639. The next prime is 2222003677. The reversal of 2222003645 is 5463002222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 391960804 + 1830042841 = 19798^2 + 42779^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222003645 - 2²⁰ = 2220955069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222200360 + ... + 222200369.

It is an arithmetic number, because the mean of its divisors is an integer number (666601095).

Almost surely, 2^2222003645 is an apocalyptic number.

It is an amenable number.

2222003645 is a deficient number, since it is larger than the sum of its proper divisors (444400735).

2222003645 is an equidigital number, since it uses as much as digits as its factorization.

2222003645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444400734.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2222003645 is about 47138.1336605513. The cubic root of 2222003645 is about 1304.9130939421.

Adding to 2222003645 its reverse (5463002222), we get a palindrome (7685005867).

The spelling of 2222003645 in words is "two billion, two hundred twenty-two million, three thousand, six hundred forty-five".