2182010945 has 8 divisors (see below), whose sum is σ = 2772437544. Its totient is φ = 1642925824.

The previous prime is 2182010927. The next prime is 2182010947. The reversal of 2182010945 is 5490102812.

It is a Cunningham number, because it is equal to 46712²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 785568784 + 1396442161 = 28028^2 + 37369^2 .

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 2182010945 - 2²⁴ = 2165233729 is a prime.

It is a super-2 number, since 2×2182010945² = 9522343528199586050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2182010947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12835274 + ... + 12835443.

It is an arithmetic number, because the mean of its divisors is an integer number (346554693).

Almost surely, 2^2182010945 is an apocalyptic number.

It is an amenable number.

2182010945 is a deficient number, since it is larger than the sum of its proper divisors (590426599).

2182010945 is a wasteful number, since it uses less digits than its factorization.

2182010945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25670739.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2182010945 is about 46712.0000107039. Note that the first 4 decimals coincide. The cubic root of 2182010945 is about 1297.0368298909.

The spelling of 2182010945 in words is "two billion, one hundred eighty-two million, ten thousand, nine hundred forty-five".