2216346445 has 8 divisors (see below), whose sum is σ = 2663248536. Its totient is φ = 1770655296.

The previous prime is 2216346413. The next prime is 2216346449. The reversal of 2216346445 is 5446436122.

It can be written as a sum of positive squares in 4 ways, for example, as 1145551716 + 1070794729 = 33846^2 + 32723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2216346445 - 2⁵ = 2216346413 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 (2216346449) 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 7 ways as a sum of consecutive naturals, for example, 298702 + ... + 306031.

It is an arithmetic number, because the mean of its divisors is an integer number (332906067).

Almost surely, 2^2216346445 is an apocalyptic number.

It is an amenable number.

2216346445 is a deficient number, since it is larger than the sum of its proper divisors (446902091).

2216346445 is an equidigital number, since it uses as much as digits as its factorization.

2216346445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605471.

The product of its digits is 138240, while the sum is 37.

The square root of 2216346445 is about 47078.0887993555. The cubic root of 2216346445 is about 1303.8047206933.

The spelling of 2216346445 in words is "two billion, two hundred sixteen million, three hundred forty-six thousand, four hundred forty-five".