2130444181 has 2 divisors, whose sum is σ = 2130444182. Its totient is φ = 2130444180.

The previous prime is 2130444109. The next prime is 2130444187. The reversal of 2130444181 is 1814440312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2116828081 + 13616100 = 46009^2 + 3690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130444181 is a prime.

It is a super-2 number, since 2×2130444181² = 9077584816713521522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130444187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065222090 + 1065222091.

It is an arithmetic number, because the mean of its divisors is an integer number (1065222091).

Almost surely, 2^2130444181 is an apocalyptic number.

It is an amenable number.

2130444181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130444181 is an equidigital number, since it uses as much as digits as its factorization.

2130444181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 2130444181 is about 46156.7349473509. The cubic root of 2130444181 is about 1286.7377823708.

Adding to 2130444181 its reverse (1814440312), we get a palindrome (3944884493).

The spelling of 2130444181 in words is "two billion, one hundred thirty million, four hundred forty-four thousand, one hundred eighty-one".