133648986 has 16 divisors (see below), whose sum is σ = 270302400. Its totient is φ = 44048928.

The previous prime is 133648981. The next prime is 133648993. The reversal of 133648986 is 689846331.

It is not an unprimeable number, because it can be changed into a prime (133648981) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 124606 + ... + 125673.

It is an arithmetic number, because the mean of its divisors is an integer number (16893900).

Almost surely, 2^133648986 is an apocalyptic number.

133648986 is an abundant number, since it is smaller than the sum of its proper divisors (136653414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133648986 is a wasteful number, since it uses less digits than its factorization.

133648986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250373.

The product of its digits is 746496, while the sum is 48.

The square root of 133648986 is about 11560.6654652749. The cubic root of 133648986 is about 511.2757832379.

The spelling of 133648986 in words is "one hundred thirty-three million, six hundred forty-eight thousand, nine hundred eighty-six".