2182247845 has 4 divisors (see below), whose sum is σ = 2618697420. Its totient is φ = 1745798272.

The previous prime is 2182247833. The next prime is 2182247849. The reversal of 2182247845 is 5487422812.

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 948763204 + 1233484641 = 30802^2 + 35121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2182247845 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2182247849) 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 3 ways as a sum of consecutive naturals, for example, 218224780 + ... + 218224789.

It is an arithmetic number, because the mean of its divisors is an integer number (654674355).

Almost surely, 2^2182247845 is an apocalyptic number.

It is an amenable number.

2182247845 is a deficient number, since it is larger than the sum of its proper divisors (436449575).

2182247845 is an equidigital number, since it uses as much as digits as its factorization.

2182247845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436449574.

The product of its digits is 286720, while the sum is 43.

The square root of 2182247845 is about 46714.5356928654. The cubic root of 2182247845 is about 1297.0837677712.

The spelling of 2182247845 in words is "two billion, one hundred eighty-two million, two hundred forty-seven thousand, eight hundred forty-five".