2208722851 has 4 divisors (see below), whose sum is σ = 2209690912. Its totient is φ = 2207754792.

The previous prime is 2208722819. The next prime is 2208722869. The reversal of 2208722851 is 1582278022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2208722851 - 2⁵ = 2208722819 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 2208722851.

It is not an unprimeable number, because it can be changed into a prime (2208722651) 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, 480600 + ... + 485173.

It is an arithmetic number, because the mean of its divisors is an integer number (552422728).

Almost surely, 2^2208722851 is an apocalyptic number.

2208722851 is a deficient number, since it is larger than the sum of its proper divisors (968061).

2208722851 is an equidigital number, since it uses as much as digits as its factorization.

2208722851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968060.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 2208722851 is about 46997.0515138982. The cubic root of 2208722851 is about 1302.3080990437.

The spelling of 2208722851 in words is "two billion, two hundred eight million, seven hundred twenty-two thousand, eight hundred fifty-one".