18182545 has 8 divisors (see below), whose sum is σ = 21845160. Its totient is φ = 14528640.

The previous prime is 18182533. The next prime is 18182579. The reversal of 18182545 is 54528181.

It can be written as a sum of positive squares in 4 ways, for example, as 868624 + 17313921 = 932^2 + 4161^2 .

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

It is not a de Polignac number, because 18182545 - 2¹⁵ = 18149777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18182545.

It is an unprimeable number.

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, 4035 + ... + 7255.

It is an arithmetic number, because the mean of its divisors is an integer number (2730645).

Almost surely, 2^18182545 is an apocalyptic number.

It is an amenable number.

18182545 is a deficient number, since it is larger than the sum of its proper divisors (3662615).

18182545 is a wasteful number, since it uses less digits than its factorization.

18182545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355.

The product of its digits is 12800, while the sum is 34.

The square root of 18182545 is about 4264.0995532469. The cubic root of 18182545 is about 262.9570932428.

The spelling of 18182545 in words is "eighteen million, one hundred eighty-two thousand, five hundred forty-five".