36129181 has 16 divisors (see below), whose sum is σ = 40435200. Its totient is φ = 32004400.

The previous prime is 36129169. The next prime is 36129187. The reversal of 36129181 is 18192163.

36129181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 36129181 - 2⁷ = 36129053 is a prime.

It is a super-2 number, since 2×36129181² = 2610635439461522, 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 (36129187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116016 + ... + 116326.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 2^36129181 is an apocalyptic number.

It is an amenable number.

36129181 is a deficient number, since it is larger than the sum of its proper divisors (4306019).

36129181 is a wasteful number, since it uses less digits than its factorization.

36129181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560.

The product of its digits is 2592, while the sum is 31.

The square root of 36129181 is about 6010.7554433698. The cubic root of 36129181 is about 330.5872036653.

The spelling of 36129181 in words is "thirty-six million, one hundred twenty-nine thousand, one hundred eighty-one".