133538186 has 16 divisors (see below), whose sum is σ = 205044480. Its totient is φ = 65196720.

The previous prime is 133538131. The next prime is 133538191. The reversal of 133538186 is 681835331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46451 + ... + 49241.

It is an arithmetic number, because the mean of its divisors is an integer number (12815280).

Almost surely, 2^133538186 is an apocalyptic number.

133538186 is a deficient number, since it is larger than the sum of its proper divisors (71506294).

133538186 is a wasteful number, since it uses less digits than its factorization.

133538186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349.

The product of its digits is 51840, while the sum is 38.

The square root of 133538186 is about 11555.8723599735. The cubic root of 133538186 is about 511.1344552700.

The spelling of 133538186 in words is "one hundred thirty-three million, five hundred thirty-eight thousand, one hundred eighty-six".