133789505 has 16 divisors (see below), whose sum is σ = 168030720. Its totient is φ = 102070848.

The previous prime is 133789501. The next prime is 133789529. The reversal of 133789505 is 505987331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133789505 - 2² = 133789501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133789501) 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 15 ways as a sum of consecutive naturals, for example, 41336 + ... + 44454.

It is an arithmetic number, because the mean of its divisors is an integer number (10501920).

Almost surely, 2^133789505 is an apocalyptic number.

It is an amenable number.

133789505 is a deficient number, since it is larger than the sum of its proper divisors (34241215).

133789505 is a wasteful number, since it uses less digits than its factorization.

133789505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 133789505 is about 11566.7413302105. The cubic root of 133789505 is about 511.4549061768.

It can be divided in two parts, 1337 and 89505, that multiplied together give a triangular number (119668185 = T₁₅₄₇₀).

The spelling of 133789505 in words is "one hundred thirty-three million, seven hundred eighty-nine thousand, five hundred five".