845848881 has 12 divisors (see below), whose sum is σ = 1225640052. Its totient is φ = 562118496.

The previous prime is 845848879. The next prime is 845848907. The reversal of 845848881 is 188848548.

845848881 is a `hidden beast` number, since 84 + 5 + 8 + 488 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 174002481 + 671846400 = 13191^2 + 25920^2 .

It is not a de Polignac number, because 845848881 - 2¹ = 845848879 is a prime.

It is a super-2 number, since 2×845848881² = 1430920658977904322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (845848811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145386 + ... + 151091.

It is an arithmetic number, because the mean of its divisors is an integer number (102136671).

Almost surely, 2^845848881 is an apocalyptic number.

It is an amenable number.

845848881 is a deficient number, since it is larger than the sum of its proper divisors (379791171).

845848881 is a wasteful number, since it uses less digits than its factorization.

845848881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296800 (or 296797 counting only the distinct ones).

The product of its digits is 2621440, while the sum is 54.

The square root of 845848881 is about 29083.4812393565. The cubic root of 845848881 is about 945.7236717633.

The spelling of 845848881 in words is "eight hundred forty-five million, eight hundred forty-eight thousand, eight hundred eighty-one".