2805421147 has 4 divisors (see below), whose sum is σ = 2833197696. Its totient is φ = 2777644600.

The previous prime is 2805421139. The next prime is 2805421163. The reversal of 2805421147 is 7411245082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2805421147 - 2³ = 2805421139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805421127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13888123 + ... + 13888324.

It is an arithmetic number, because the mean of its divisors is an integer number (708299424).

Almost surely, 2^2805421147 is an apocalyptic number.

2805421147 is a deficient number, since it is larger than the sum of its proper divisors (27776549).

2805421147 is a wasteful number, since it uses less digits than its factorization.

2805421147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27776548.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2805421147 is about 52966.2264749906. The cubic root of 2805421147 is about 1410.3687895722.

The spelling of 2805421147 in words is "two billion, eight hundred five million, four hundred twenty-one thousand, one hundred forty-seven".