2229644785 has 8 divisors (see below), whose sum is σ = 2679751656. Its totient is φ = 1780930560.

The previous prime is 2229644777. The next prime is 2229644789. The reversal of 2229644785 is 5874469222.

It can be written as a sum of positive squares in 4 ways, for example, as 1444076001 + 785568784 = 38001^2 + 28028^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2229644785 - 2³ = 2229644777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2229644789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344634 + ... + 351043.

It is an arithmetic number, because the mean of its divisors is an integer number (334968957).

Almost surely, 2^2229644785 is an apocalyptic number.

It is an amenable number.

2229644785 is a deficient number, since it is larger than the sum of its proper divisors (450106871).

2229644785 is an equidigital number, since it uses as much as digits as its factorization.

2229644785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696323.

The product of its digits is 1935360, while the sum is 49.

The square root of 2229644785 is about 47219.1146147405. The cubic root of 2229644785 is about 1306.4071832707.

It can be divided in two parts, 22296 and 44785, that added together give a square (67081 = 259²).

The spelling of 2229644785 in words is "two billion, two hundred twenty-nine million, six hundred forty-four thousand, seven hundred eighty-five".