82936181 has 4 divisors (see below), whose sum is σ = 82985772. Its totient is φ = 82886592.

The previous prime is 82936169. The next prime is 82936187. The reversal of 82936181 is 18163928.

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 41075281 + 41860900 = 6409^2 + 6470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82936181 is a prime.

It is a super-2 number, since 2×82936181² = 13756820237729522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82936187) 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, 22196 + ... + 25661.

It is an arithmetic number, because the mean of its divisors is an integer number (20746443).

Almost surely, 2^82936181 is an apocalyptic number.

It is an amenable number.

82936181 is a deficient number, since it is larger than the sum of its proper divisors (49591).

82936181 is a wasteful number, since it uses less digits than its factorization.

82936181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49590.

The product of its digits is 20736, while the sum is 38.

The square root of 82936181 is about 9106.9303829556. The cubic root of 82936181 is about 436.0952380818.

The spelling of 82936181 in words is "eighty-two million, nine hundred thirty-six thousand, one hundred eighty-one".