133785168 has 40 divisors (see below), whose sum is σ = 377032416. Its totient is φ = 40540800.

The previous prime is 133785167. The next prime is 133785187. The reversal of 133785168 is 861587331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133785167) 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, 126163 + ... + 127218.

Almost surely, 2^133785168 is an apocalyptic number.

It is an amenable number.

133785168 is an abundant number, since it is smaller than the sum of its proper divisors (243247248).

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

133785168 is a wasteful number, since it uses less digits than its factorization.

133785168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253403 (or 253397 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 133785168 is about 11566.5538515152. The cubic root of 133785168 is about 511.4493795752.

The spelling of 133785168 in words is "one hundred thirty-three million, seven hundred eighty-five thousand, one hundred sixty-eight".