891064158 has 8 divisors (see below), whose sum is σ = 1782128328. Its totient is φ = 297021384.

The previous prime is 891064157. The next prime is 891064171. The reversal of 891064158 is 851460198.

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

891064158 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891064157) by changing a digit.

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, 74255341 + ... + 74255352.

It is an arithmetic number, because the mean of its divisors is an integer number (222766041).

Almost surely, 2^891064158 is an apocalyptic number.

891064158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

891064158 is a wasteful number, since it uses less digits than its factorization.

891064158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148510698.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 891064158 is about 29850.6977807890. The cubic root of 891064158 is about 962.2833948515.

The spelling of 891064158 in words is "eight hundred ninety-one million, sixty-four thousand, one hundred fifty-eight".