2229567861 has 4 divisors (see below), whose sum is σ = 2972757152. Its totient is φ = 1486378572.

The previous prime is 2229567841. The next prime is 2229567869. The reversal of 2229567861 is 1687659222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2229567861 - 2⁶ = 2229567797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2229567861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229567869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371594641 + ... + 371594646.

It is an arithmetic number, because the mean of its divisors is an integer number (743189288).

Almost surely, 2^2229567861 is an apocalyptic number.

It is an amenable number.

2229567861 is a deficient number, since it is larger than the sum of its proper divisors (743189291).

2229567861 is an equidigital number, since it uses as much as digits as its factorization.

2229567861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743189290.

The product of its digits is 725760, while the sum is 48.

The square root of 2229567861 is about 47218.3000646995. The cubic root of 2229567861 is about 1306.3921591702.

The spelling of 2229567861 in words is "two billion, two hundred twenty-nine million, five hundred sixty-seven thousand, eight hundred sixty-one".