133688118 has 16 divisors (see below), whose sum is σ = 273594816. Its totient is φ = 43526280.

The previous prime is 133688117. The next prime is 133688143. The reversal of 133688118 is 811886331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133688111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258828 + ... + 259343.

It is an arithmetic number, because the mean of its divisors is an integer number (17099676).

Almost surely, 2^133688118 is an apocalyptic number.

133688118 is an abundant number, since it is smaller than the sum of its proper divisors (139906698).

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

133688118 is a wasteful number, since it uses less digits than its factorization.

133688118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518219.

The product of its digits is 27648, while the sum is 39.

The square root of 133688118 is about 11562.3578045310. The cubic root of 133688118 is about 511.3256783454.

The spelling of 133688118 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, one hundred eighteen".