11831748181 has 16 divisors (see below), whose sum is σ = 13187536128. Its totient is φ = 10522849600.

The previous prime is 11831748163. The next prime is 11831748209. The reversal of 11831748181 is 18184713811.

It is a cyclic number.

It is not a de Polignac number, because 11831748181 - 2⁷ = 11831748053 is a prime.

It is a super-2 number, since 2×11831748181² (a number of 21 digits) 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 (11831748151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2196111 + ... + 2201491.

It is an arithmetic number, because the mean of its divisors is an integer number (824221008).

Almost surely, 2^11831748181 is an apocalyptic number.

11831748181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11831748181 is a deficient number, since it is larger than the sum of its proper divisors (1355787947).

11831748181 is a wasteful number, since it uses less digits than its factorization.

11831748181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9692.

The product of its digits is 43008, while the sum is 43.

The spelling of 11831748181 in words is "eleven billion, eight hundred thirty-one million, seven hundred forty-eight thousand, one hundred eighty-one".