4181042181 has 4 divisors (see below), whose sum is σ = 5574722912. Its totient is φ = 2787361452.

The previous prime is 4181042167. The next prime is 4181042191. The reversal of 4181042181 is 1812401814.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4181042181 - 2¹⁹ = 4180517893 is a prime.

It is a super-2 number, since 2×4181042181² = 34962227438602473522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4181042141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696840361 + ... + 696840366.

It is an arithmetic number, because the mean of its divisors is an integer number (1393680728).

Almost surely, 2^4181042181 is an apocalyptic number.

It is an amenable number.

4181042181 is a deficient number, since it is larger than the sum of its proper divisors (1393680731).

4181042181 is a wasteful number, since it uses less digits than its factorization.

4181042181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393680730.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 4181042181 is about 64660.9788125729. The cubic root of 4181042181 is about 1610.9974376925.

Adding to 4181042181 its reverse (1812401814), we get a palindrome (5993443995).

The spelling of 4181042181 in words is "four billion, one hundred eighty-one million, forty-two thousand, one hundred eighty-one".