133601850 has 72 divisors (see below), whose sum is σ = 360378720. Its totient is φ = 35484960.

The previous prime is 133601807. The next prime is 133601851. The reversal of 133601850 is 58106331.

133601850 is a `hidden beast` number, since 1 + 3 + 3 + 601 + 8 + 50 = 666.

It is not an unprimeable number, because it can be changed into a prime (133601851) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 161137 + ... + 161963.

It is an arithmetic number, because the mean of its divisors is an integer number (5005260).

Almost surely, 2^133601850 is an apocalyptic number.

133601850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133601850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180189360).

133601850 is an abundant number, since it is smaller than the sum of its proper divisors (226776870).

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

133601850 is a wasteful number, since it uses less digits than its factorization.

133601850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 133601850 is about 11558.6266485253. The cubic root of 133601850 is about 511.2156697277.

The spelling of 133601850 in words is "one hundred thirty-three million, six hundred one thousand, eight hundred fifty".