133643836 has 6 divisors (see below), whose sum is σ = 233876720. Its totient is φ = 66821916.

The previous prime is 133643833. The next prime is 133643837. The reversal of 133643836 is 638346331.

133643836 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 133643795 and 133643804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133643833) by changing a digit.

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 as a sum of consecutive naturals, namely, 16705476 + ... + 16705483.

Almost surely, 2^133643836 is an apocalyptic number.

It is an amenable number.

133643836 is a deficient number, since it is larger than the sum of its proper divisors (100232884).

133643836 is a wasteful number, since it uses less digits than its factorization.

133643836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33410963 (or 33410961 counting only the distinct ones).

The product of its digits is 93312, while the sum is 37.

The square root of 133643836 is about 11560.4427250863. The cubic root of 133643836 is about 511.2692160248.

The spelling of 133643836 in words is "one hundred thirty-three million, six hundred forty-three thousand, eight hundred thirty-six".