2271189849 has 4 divisors (see below), whose sum is σ = 3028253136. Its totient is φ = 1514126564.

The previous prime is 2271189841. The next prime is 2271189853. The reversal of 2271189849 is 9489811722.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2271189849 - 2³ = 2271189841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2271189841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378531639 + ... + 378531644.

It is an arithmetic number, because the mean of its divisors is an integer number (757063284).

Almost surely, 2^2271189849 is an apocalyptic number.

It is an amenable number.

2271189849 is a deficient number, since it is larger than the sum of its proper divisors (757063287).

2271189849 is an equidigital number, since it uses as much as digits as its factorization.

2271189849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757063286.

The product of its digits is 580608, while the sum is 51.

The square root of 2271189849 is about 47657.0020983276. The cubic root of 2271189849 is about 1314.4714148257.

The spelling of 2271189849 in words is "two billion, two hundred seventy-one million, one hundred eighty-nine thousand, eight hundred forty-nine".