133891085 has 8 divisors (see below), whose sum is σ = 160742880. Its totient is φ = 107063824.

The previous prime is 133891067. The next prime is 133891127. The reversal of 133891085 is 580198331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133891085 - 2²² = 129696781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9506 + ... + 18924.

It is an arithmetic number, because the mean of its divisors is an integer number (20092860).

Almost surely, 2^133891085 is an apocalyptic number.

It is an amenable number.

133891085 is a deficient number, since it is larger than the sum of its proper divisors (26851795).

133891085 is an equidigital number, since it uses as much as digits as its factorization.

133891085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12267.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 133891085 is about 11571.1315349883. The cubic root of 133891085 is about 511.5843145493.

The spelling of 133891085 in words is "one hundred thirty-three million, eight hundred ninety-one thousand, eighty-five".