4011181 has 2 divisors, whose sum is σ = 4011182. Its totient is φ = 4011180.

The previous prime is 4011157. The next prime is 4011197. The reversal of 4011181 is 1811104.

It is an a-pointer prime, because the next prime (4011197) can be obtained adding 4011181 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3031081 + 980100 = 1741^2 + 990^2 .

It is a cyclic number.

It is not a de Polignac number, because 4011181 - 2⁷ = 4011053 is a prime.

It is a super-2 number, since 2×4011181² = 32179146029522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4011781) 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 as a sum of consecutive naturals, namely, 2005590 + 2005591.

It is an arithmetic number, because the mean of its divisors is an integer number (2005591).

Almost surely, 2^4011181 is an apocalyptic number.

It is an amenable number.

4011181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4011181 is an equidigital number, since it uses as much as digits as its factorization.

4011181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 4011181 is about 2002.7932993697. The cubic root of 4011181 is about 158.8878736919.

Adding to 4011181 its reverse (1811104), we get a palindrome (5822285).

The spelling of 4011181 in words is "four million, eleven thousand, one hundred eighty-one".