82105185 has 8 divisors (see below), whose sum is σ = 131368320. Its totient is φ = 43789424.

The previous prime is 82105169. The next prime is 82105187. The reversal of 82105185 is 58150128.

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 82105185 - 2⁴ = 82105169 is a prime.

It is a super-2 number, since 2×82105185² = 13482522807768450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82105187) 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, 2736825 + ... + 2736854.

It is an arithmetic number, because the mean of its divisors is an integer number (16421040).

Almost surely, 2^82105185 is an apocalyptic number.

It is an amenable number.

82105185 is a deficient number, since it is larger than the sum of its proper divisors (49263135).

82105185 is a wasteful number, since it uses less digits than its factorization.

82105185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473687.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 82105185 is about 9061.1911468636. The cubic root of 82105185 is about 434.6338311096.

The spelling of 82105185 in words is "eighty-two million, one hundred five thousand, one hundred eighty-five".