891894333161 has 16 divisors (see below), whose sum is σ = 984001912320. Its totient is φ = 803146942080.

The previous prime is 891894333157. The next prime is 891894333167. The reversal of 891894333161 is 161333498198.

It is a cyclic number.

It is not a de Polignac number, because 891894333161 - 2² = 891894333157 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 891894333097 and 891894333106.

It is not an unprimeable number, because it can be changed into a prime (891894333167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8078216 + ... + 8187878.

It is an arithmetic number, because the mean of its divisors is an integer number (61500119520).

Almost surely, 2^891894333161 is an apocalyptic number.

It is an amenable number.

891894333161 is a deficient number, since it is larger than the sum of its proper divisors (92107579159).

891894333161 is a wasteful number, since it uses less digits than its factorization.

891894333161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124976.

The product of its digits is 3359232, while the sum is 56.

The spelling of 891894333161 in words is "eight hundred ninety-one billion, eight hundred ninety-four million, three hundred thirty-three thousand, one hundred sixty-one".