133775218 has 8 divisors (see below), whose sum is σ = 203489280. Its totient is φ = 65945460.

The previous prime is 133775209. The next prime is 133775237. The reversal of 133775218 is 812577331.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470898 + ... + 471181.

It is an arithmetic number, because the mean of its divisors is an integer number (25436160).

Almost surely, 2^133775218 is an apocalyptic number.

133775218 is a deficient number, since it is larger than the sum of its proper divisors (69714062).

133775218 is an equidigital number, since it uses as much as digits as its factorization.

133775218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942152.

The product of its digits is 35280, while the sum is 37.

The square root of 133775218 is about 11566.1237240486. The cubic root of 133775218 is about 511.4366999248.

The spelling of 133775218 in words is "one hundred thirty-three million, seven hundred seventy-five thousand, two hundred eighteen".