805491168 has 48 divisors (see below), whose sum is σ = 2225704320. Its totient is φ = 254365056.

The previous prime is 805491163. The next prime is 805491173. The reversal of 805491168 is 861194508.

It is an interprime number because it is at equal distance from previous prime (805491163) and next prime (805491173).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805491163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218980 + ... + 222627.

It is an arithmetic number, because the mean of its divisors is an integer number (46368840).

Almost surely, 2^805491168 is an apocalyptic number.

It is an amenable number.

805491168 is an abundant number, since it is smaller than the sum of its proper divisors (1420213152).

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

805491168 is a wasteful number, since it uses less digits than its factorization.

805491168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441639 (or 441631 counting only the distinct ones).

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

The square root of 805491168 is about 28381.1762969754. The cubic root of 805491168 is about 930.4369042073.

The spelling of 805491168 in words is "eight hundred five million, four hundred ninety-one thousand, one hundred sixty-eight".