804641845 has 16 divisors (see below), whose sum is σ = 1104364800. Its totient is φ = 551326464.

The previous prime is 804641837. The next prime is 804641861. The reversal of 804641845 is 548146408.

It is a cyclic number.

It is not a de Polignac number, because 804641845 - 2³ = 804641837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 804641798 and 804641807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40749 + ... + 57181.

It is an arithmetic number, because the mean of its divisors is an integer number (69022800).

Almost surely, 2^804641845 is an apocalyptic number.

It is an amenable number.

804641845 is a deficient number, since it is larger than the sum of its proper divisors (299722955).

804641845 is a wasteful number, since it uses less digits than its factorization.

804641845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17844.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 804641845 is about 28366.2095634930. The cubic root of 804641845 is about 930.1097665945.

The spelling of 804641845 in words is "eight hundred four million, six hundred forty-one thousand, eight hundred forty-five".