9936181 has 2 divisors, whose sum is σ = 9936182. Its totient is φ = 9936180.

The previous prime is 9936163. The next prime is 9936187. The reversal of 9936181 is 1816399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9205156 + 731025 = 3034^2 + 855^2 .

It is a cyclic number.

It is not a de Polignac number, because 9936181 - 2¹⁹ = 9411893 is a prime.

It is a super-2 number, since 2×9936181² = 197455385729522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9936181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9936187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4968090 + 4968091.

It is an arithmetic number, because the mean of its divisors is an integer number (4968091).

Almost surely, 2^9936181 is an apocalyptic number.

It is an amenable number.

9936181 is a deficient number, since it is larger than the sum of its proper divisors (1).

9936181 is an equidigital number, since it uses as much as digits as its factorization.

9936181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 37.

The square root of 9936181 is about 3152.1708392789. The cubic root of 9936181 is about 214.9841776710.

The spelling of 9936181 in words is "nine million, nine hundred thirty-six thousand, one hundred eighty-one".