133648835 has 4 divisors (see below), whose sum is σ = 160378608. Its totient is φ = 106919064.

The previous prime is 133648819. The next prime is 133648861. The reversal of 133648835 is 538846331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 538846331 = 17 ⋅31696843.

It is a cyclic number.

It is not a de Polignac number, because 133648835 - 2⁴ = 133648819 is a prime.

It is a super-2 number, since 2×133648835² = 35724022193714450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133648792 and 133648801.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13364879 + ... + 13364888.

It is an arithmetic number, because the mean of its divisors is an integer number (40094652).

Almost surely, 2^133648835 is an apocalyptic number.

133648835 is a deficient number, since it is larger than the sum of its proper divisors (26729773).

133648835 is an equidigital number, since it uses as much as digits as its factorization.

133648835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26729772.

The product of its digits is 207360, while the sum is 41.

The square root of 133648835 is about 11560.6589345072. The cubic root of 133648835 is about 511.2755906870.

The spelling of 133648835 in words is "one hundred thirty-three million, six hundred forty-eight thousand, eight hundred thirty-five".