5181942181 has 16 divisors (see below), whose sum is σ = 5877930240. Its totient is φ = 4528751040.

The previous prime is 5181942163. The next prime is 5181942191. The reversal of 5181942181 is 1812491815.

It is a cyclic number.

It is not a de Polignac number, because 5181942181 - 2¹¹ = 5181940133 is a prime.

It is a super-2 number, since 2×5181942181² = 53705049534454073522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181942121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456531 + ... + 467743.

It is an arithmetic number, because the mean of its divisors is an integer number (367370640).

Almost surely, 2^5181942181 is an apocalyptic number.

It is an amenable number.

5181942181 is a deficient number, since it is larger than the sum of its proper divisors (695988059).

5181942181 is a wasteful number, since it uses less digits than its factorization.

5181942181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13116.

The product of its digits is 23040, while the sum is 40.

The square root of 5181942181 is about 71985.7081718309. The cubic root of 5181942181 is about 1730.4704503132.

The spelling of 5181942181 in words is "five billion, one hundred eighty-one million, nine hundred forty-two thousand, one hundred eighty-one".