132991994 has 8 divisors (see below), whose sum is σ = 200316468. Its totient is φ = 66219840.

The previous prime is 132991993. The next prime is 132992009. The reversal of 132991994 is 499199231.

It can be written as a sum of positive squares in 2 ways, for example, as 124657225 + 8334769 = 11165^2 + 2887^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (132991993) 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, 137477 + ... + 138440.

Almost surely, 2^132991994 is an apocalyptic number.

132991994 is a deficient number, since it is larger than the sum of its proper divisors (67324474).

132991994 is a wasteful number, since it uses less digits than its factorization.

132991994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276160.

The product of its digits is 157464, while the sum is 47.

The square root of 132991994 is about 11532.2154853263. The cubic root of 132991994 is about 510.4366297950.

The spelling of 132991994 in words is "one hundred thirty-two million, nine hundred ninety-one thousand, nine hundred ninety-four".