805881849 has 8 divisors (see below), whose sum is σ = 1076172480. Its totient is φ = 536422896.

The previous prime is 805881781. The next prime is 805881851. The reversal of 805881849 is 948188508.

It is a happy number.

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

It is not a de Polignac number, because 805881849 - 2¹¹ = 805879801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (805883849) 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, 205654 + ... + 209535.

It is an arithmetic number, because the mean of its divisors is an integer number (134521560).

Almost surely, 2^805881849 is an apocalyptic number.

It is an amenable number.

805881849 is a deficient number, since it is larger than the sum of its proper divisors (270290631).

805881849 is a wasteful number, since it uses less digits than its factorization.

805881849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415839.

The product of its (nonzero) digits is 737280, while the sum is 51.

The square root of 805881849 is about 28388.0582111563. The cubic root of 805881849 is about 930.5873073738.

The spelling of 805881849 in words is "eight hundred five million, eight hundred eighty-one thousand, eight hundred forty-nine".