2162941181 has 2 divisors, whose sum is σ = 2162941182. Its totient is φ = 2162941180.

The previous prime is 2162941061. The next prime is 2162941213. The reversal of 2162941181 is 1811492612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2100388900 + 62552281 = 45830^2 + 7909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2162941181 is a prime.

It is a super-2 number, since 2×2162941181² = 9356629104931349522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2162941681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081470590 + 1081470591.

It is an arithmetic number, because the mean of its divisors is an integer number (1081470591).

Almost surely, 2^2162941181 is an apocalyptic number.

It is an amenable number.

2162941181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162941181 is an equidigital number, since it uses as much as digits as its factorization.

2162941181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 35.

The square root of 2162941181 is about 46507.4314599291. The cubic root of 2162941181 is about 1293.2472685065.

The spelling of 2162941181 in words is "two billion, one hundred sixty-two million, nine hundred forty-one thousand, one hundred eighty-one".