83085181 has 2 divisors, whose sum is σ = 83085182. Its totient is φ = 83085180.

The previous prime is 83085173. The next prime is 83085193. The reversal of 83085181 is 18158038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63202500 + 19882681 = 7950^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 83085181 - 2³ = 83085173 is a prime.

It is a super-2 number, since 2×83085181² = 13806294603605522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83085281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41542590 + 41542591.

It is an arithmetic number, because the mean of its divisors is an integer number (41542591).

Almost surely, 2^83085181 is an apocalyptic number.

It is an amenable number.

83085181 is a deficient number, since it is larger than the sum of its proper divisors (1).

83085181 is an equidigital number, since it uses as much as digits as its factorization.

83085181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 83085181 is about 9115.1072950350. The cubic root of 83085181 is about 436.3562392357.

The spelling of 83085181 in words is "eighty-three million, eighty-five thousand, one hundred eighty-one".