133729538 has 4 divisors (see below), whose sum is σ = 200594310. Its totient is φ = 66864768.

The previous prime is 133729499. The next prime is 133729549. The reversal of 133729538 is 835927331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 133702969 + 26569 = 11563^2 + 163^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133729495 and 133729504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33432383 + ... + 33432386.

Almost surely, 2^133729538 is an apocalyptic number.

133729538 is a deficient number, since it is larger than the sum of its proper divisors (66864772).

133729538 is an equidigital number, since it uses as much as digits as its factorization.

133729538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66864771.

The product of its digits is 136080, while the sum is 41.

The square root of 133729538 is about 11564.1488229787. The cubic root of 133729538 is about 511.3784801526.

The spelling of 133729538 in words is "one hundred thirty-three million, seven hundred twenty-nine thousand, five hundred thirty-eight".