132161609 has 4 divisors (see below), whose sum is σ = 133972116. Its totient is φ = 130351104.

The previous prime is 132161597. The next prime is 132161639. The reversal of 132161609 is 906161231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55651600 + 76510009 = 7460^2 + 8747^2 .

It is a cyclic number.

It is not a de Polignac number, because 132161609 - 2⁸ = 132161353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (132161639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905144 + ... + 905289.

It is an arithmetic number, because the mean of its divisors is an integer number (33493029).

Almost surely, 2^132161609 is an apocalyptic number.

It is an amenable number.

132161609 is a deficient number, since it is larger than the sum of its proper divisors (1810507).

132161609 is an equidigital number, since it uses as much as digits as its factorization.

132161609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810506.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 132161609 is about 11496.1562706846. The cubic root of 132161609 is about 509.3720439890.

The spelling of 132161609 in words is "one hundred thirty-two million, one hundred sixty-one thousand, six hundred nine".