133678018 has 8 divisors (see below), whose sum is σ = 200648448. Its totient is φ = 66795204.

The previous prime is 133678009. The next prime is 133678049. The reversal of 133678018 is 810876331.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17946 + ... + 24277.

It is an arithmetic number, because the mean of its divisors is an integer number (25081056).

Almost surely, 2^133678018 is an apocalyptic number.

133678018 is a deficient number, since it is larger than the sum of its proper divisors (66970430).

133678018 is a wasteful number, since it uses less digits than its factorization.

133678018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43808.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 133678018 is about 11561.9210341535. The cubic root of 133678018 is about 511.3128013112.

The spelling of 133678018 in words is "one hundred thirty-three million, six hundred seventy-eight thousand, eighteen".