133885835 has 4 divisors (see below), whose sum is σ = 160663008. Its totient is φ = 107108664.

The previous prime is 133885793. The next prime is 133885841. The reversal of 133885835 is 538588331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 538588331 = 127 ⋅4240853.

It is a cyclic number.

It is not a de Polignac number, because 133885835 - 2¹⁸ = 133623691 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13388579 + ... + 13388588.

It is an arithmetic number, because the mean of its divisors is an integer number (40165752).

Almost surely, 2^133885835 is an apocalyptic number.

133885835 is a deficient number, since it is larger than the sum of its proper divisors (26777173).

133885835 is an equidigital number, since it uses as much as digits as its factorization.

133885835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26777172.

The product of its digits is 345600, while the sum is 44.

The square root of 133885835 is about 11570.9046750892. The cubic root of 133885835 is about 511.5776278886.

The spelling of 133885835 in words is "one hundred thirty-three million, eight hundred eighty-five thousand, eight hundred thirty-five".