132178981 has 4 divisors (see below), whose sum is σ = 144195264. Its totient is φ = 120162700.

The previous prime is 132178951. The next prime is 132179017. The reversal of 132178981 is 189871231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 132178981 - 2⁹ = 132178469 is a prime.

It is a super-2 number, since 2×132178981² = 34942566036396722, 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 (132178901) 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 3 ways as a sum of consecutive naturals, for example, 6008125 + ... + 6008146.

It is an arithmetic number, because the mean of its divisors is an integer number (36048816).

Almost surely, 2^132178981 is an apocalyptic number.

132178981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

132178981 is a deficient number, since it is larger than the sum of its proper divisors (12016283).

132178981 is a wasteful number, since it uses less digits than its factorization.

132178981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016282.

The product of its digits is 24192, while the sum is 40.

The square root of 132178981 is about 11496.9118027408. The cubic root of 132178981 is about 509.3943611696.

The spelling of 132178981 in words is "one hundred thirty-two million, one hundred seventy-eight thousand, nine hundred eighty-one".