133016891 has 16 divisors (see below), whose sum is σ = 169436160. Its totient is φ = 101658240.

The previous prime is 133016861. The next prime is 133016903. The reversal of 133016891 is 198610331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133016891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133016861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27155 + ... + 31676.

It is an arithmetic number, because the mean of its divisors is an integer number (10589760).

Almost surely, 2^133016891 is an apocalyptic number.

133016891 is a deficient number, since it is larger than the sum of its proper divisors (36419269).

133016891 is a wasteful number, since it uses less digits than its factorization.

133016891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58874.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 133016891 is about 11533.2948891459. The cubic root of 133016891 is about 510.4684802030.

The spelling of 133016891 in words is "one hundred thirty-three million, sixteen thousand, eight hundred ninety-one".