2278226213 has 4 divisors (see below), whose sum is σ = 2333792748. Its totient is φ = 2222659680.

The previous prime is 2278226207. The next prime is 2278226257. The reversal of 2278226213 is 3126228722.

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 302690404 + 1975535809 = 17398^2 + 44447^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278226213 - 2⁶ = 2278226149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278226273) 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 3 ways as a sum of consecutive naturals, for example, 27783206 + ... + 27783287.

It is an arithmetic number, because the mean of its divisors is an integer number (583448187).

Almost surely, 2^2278226213 is an apocalyptic number.

It is an amenable number.

2278226213 is a deficient number, since it is larger than the sum of its proper divisors (55566535).

2278226213 is an equidigital number, since it uses as much as digits as its factorization.

2278226213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55566534.

The product of its digits is 32256, while the sum is 35.

The square root of 2278226213 is about 47730.7679908882. The cubic root of 2278226213 is about 1315.8274682353.

The spelling of 2278226213 in words is "two billion, two hundred seventy-eight million, two hundred twenty-six thousand, two hundred thirteen".