181186130140 has 12 divisors (see below), whose sum is σ = 380490873336. Its totient is φ = 72474452048.

The previous prime is 181186130131. The next prime is 181186130141. The reversal of 181186130140 is 41031681181.

181186130140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 181186130096 and 181186130105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181186130141) 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 in 3 ways as a sum of consecutive naturals, for example, 4529653234 + ... + 4529653273.

It is an arithmetic number, because the mean of its divisors is an integer number (31707572778).

Almost surely, 2^181186130140 is an apocalyptic number.

181186130140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181186130140 is an abundant number, since it is smaller than the sum of its proper divisors (199304743196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181186130140 is a wasteful number, since it uses less digits than its factorization.

181186130140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9059306516 (or 9059306514 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 181186130140 in words is "one hundred eighty-one billion, one hundred eighty-six million, one hundred thirty thousand, one hundred forty".