2805418905 has 32 divisors (see below), whose sum is σ = 4689812736. Its totient is φ = 1429342464.

The previous prime is 2805418879. The next prime is 2805418919. The reversal of 2805418905 is 5098145082.

It is a happy number.

It is not a de Polignac number, because 2805418905 - 2²⁴ = 2788641689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289519 + ... + 299051.

It is an arithmetic number, because the mean of its divisors is an integer number (146556648).

Almost surely, 2^2805418905 is an apocalyptic number.

It is an amenable number.

2805418905 is a deficient number, since it is larger than the sum of its proper divisors (1884393831).

2805418905 is a wasteful number, since it uses less digits than its factorization.

2805418905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10417.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 2805418905 is about 52966.2053105563. The cubic root of 2805418905 is about 1410.3684138654.

The spelling of 2805418905 in words is "two billion, eight hundred five million, four hundred eighteen thousand, nine hundred five".