2070181 has 2 divisors, whose sum is σ = 2070182. Its totient is φ = 2070180.

The previous prime is 2070179. The next prime is 2070203. The reversal of 2070181 is 1810702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2044900 + 25281 = 1430^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 2070181 - 2¹ = 2070179 is a prime.

It is a super-2 number, since 2×2070181² = 8571298745522, which contains 22 as substring.

Together with 2070179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2070581) 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, 1035090 + 1035091.

It is an arithmetic number, because the mean of its divisors is an integer number (1035091).

2^2070181 is an apocalyptic number.

It is an amenable number.

2070181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2070181 is an equidigital number, since it uses as much as digits as its factorization.

2070181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 2070181 is about 1438.8123574671. The cubic root of 2070181 is about 127.4489042986.

Adding to 2070181 its reverse (1810702), we get a palindrome (3880883).

The spelling of 2070181 in words is "two million, seventy thousand, one hundred eighty-one".