132181685 has 4 divisors (see below), whose sum is σ = 158618028. Its totient is φ = 105745344.

The previous prime is 132181661. The next prime is 132181691. The reversal of 132181685 is 586181231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586181231 = 10399 ⋅56369.

It can be written as a sum of positive squares in 2 ways, for example, as 47872561 + 84309124 = 6919^2 + 9182^2 .

It is a cyclic number.

It is not a de Polignac number, because 132181685 - 2⁸ = 132181429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13218164 + ... + 13218173.

It is an arithmetic number, because the mean of its divisors is an integer number (39654507).

Almost surely, 2^132181685 is an apocalyptic number.

It is an amenable number.

132181685 is a deficient number, since it is larger than the sum of its proper divisors (26436343).

132181685 is an equidigital number, since it uses as much as digits as its factorization.

132181685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26436342.

The product of its digits is 11520, while the sum is 35.

The square root of 132181685 is about 11497.0293989361. The cubic root of 132181685 is about 509.3978347248.

The spelling of 132181685 in words is "one hundred thirty-two million, one hundred eighty-one thousand, six hundred eighty-five".