2216523449 has 4 divisors (see below), whose sum is σ = 2533169664. Its totient is φ = 1899877236.

The previous prime is 2216523433. The next prime is 2216523457. The reversal of 2216523449 is 9443256122.

2216523449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2216523449 - 2⁴ = 2216523433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216523469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158323097 + ... + 158323110.

It is an arithmetic number, because the mean of its divisors is an integer number (633292416).

Almost surely, 2^2216523449 is an apocalyptic number.

It is an amenable number.

2216523449 is a deficient number, since it is larger than the sum of its proper divisors (316646215).

2216523449 is an equidigital number, since it uses as much as digits as its factorization.

2216523449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316646214.

The product of its digits is 103680, while the sum is 38.

The square root of 2216523449 is about 47079.9686597177. The cubic root of 2216523449 is about 1303.8394283399.

The spelling of 2216523449 in words is "two billion, two hundred sixteen million, five hundred twenty-three thousand, four hundred forty-nine".