2805642713 has 4 divisors (see below), whose sum is σ = 2807551488. Its totient is φ = 2803733940.

The previous prime is 2805642689. The next prime is 2805642727. The reversal of 2805642713 is 3172465082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2805642713 - 2²⁶ = 2738533849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805642913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952181 + ... + 955122.

It is an arithmetic number, because the mean of its divisors is an integer number (701887872).

Almost surely, 2^2805642713 is an apocalyptic number.

It is an amenable number.

2805642713 is a deficient number, since it is larger than the sum of its proper divisors (1908775).

2805642713 is a wasteful number, since it uses less digits than its factorization.

2805642713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908774.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 2805642713 is about 52968.3180118078. The cubic root of 2805642713 is about 1410.4059178712.

The spelling of 2805642713 in words is "two billion, eight hundred five million, six hundred forty-two thousand, seven hundred thirteen".