181363085 has 24 divisors (see below), whose sum is σ = 228467400. Its totient is φ = 138108672.

The previous prime is 181363069. The next prime is 181363111. The reversal of 181363085 is 580363181.

It can be written as a sum of positive squares in 12 ways, for example, as 2365444 + 178997641 = 1538^2 + 13379^2 .

It is not a de Polignac number, because 181363085 - 2⁴ = 181363069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519491 + ... + 519839.

It is an arithmetic number, because the mean of its divisors is an integer number (9519475).

Almost surely, 2^181363085 is an apocalyptic number.

It is an amenable number.

181363085 is a deficient number, since it is larger than the sum of its proper divisors (47104315).

181363085 is an equidigital number, since it uses as much as digits as its factorization.

181363085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 181363085 is about 13467.1112344110. Note that the first 3 decimals coincide. The cubic root of 181363085 is about 566.0432704249.

The spelling of 181363085 in words is "one hundred eighty-one million, three hundred sixty-three thousand, eighty-five".