133218982 has 24 divisors (see below), whose sum is σ = 223860240. Its totient is φ = 59361120.

The previous prime is 133218961. The next prime is 133218983. The reversal of 133218982 is 289812331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133218983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3007 + ... + 16597.

It is an arithmetic number, because the mean of its divisors is an integer number (9327510).

Almost surely, 2^133218982 is an apocalyptic number.

133218982 is a deficient number, since it is larger than the sum of its proper divisors (90641258).

133218982 is a wasteful number, since it uses less digits than its factorization.

133218982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13648 (or 13635 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 133218982 is about 11542.0527636985. The cubic root of 133218982 is about 510.7268656484.

The spelling of 133218982 in words is "one hundred thirty-three million, two hundred eighteen thousand, nine hundred eighty-two".