2222187845 has 12 divisors (see below), whose sum is σ = 2814363180. Its totient is φ = 1684183104.

The previous prime is 2222187839. The next prime is 2222187853. The reversal of 2222187845 is 5487812222.

It can be written as a sum of positive squares in 2 ways, for example, as 963854116 + 1258333729 = 31046^2 + 35473^2 .

It is not a de Polignac number, because 2222187845 - 2⁴ = 2222187829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613760 + ... + 617369.

It is an arithmetic number, because the mean of its divisors is an integer number (234530265).

Almost surely, 2^2222187845 is an apocalyptic number.

It is an amenable number.

2222187845 is a deficient number, since it is larger than the sum of its proper divisors (592175335).

2222187845 is a wasteful number, since it uses less digits than its factorization.

2222187845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231172 (or 1231153 counting only the distinct ones).

The product of its digits is 143360, while the sum is 41.

The square root of 2222187845 is about 47140.0874521887. The cubic root of 2222187845 is about 1304.9491512412.

The spelling of 2222187845 in words is "two billion, two hundred twenty-two million, one hundred eighty-seven thousand, eight hundred forty-five".