2805418813 has 4 divisors (see below), whose sum is σ = 2927393568. Its totient is φ = 2683444060.

The previous prime is 2805418793. The next prime is 2805418877. The reversal of 2805418813 is 3188145082.

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 2805418813 - 2¹⁷ = 2805287741 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805416813) 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, 60987343 + ... + 60987388.

It is an arithmetic number, because the mean of its divisors is an integer number (731848392).

Almost surely, 2^2805418813 is an apocalyptic number.

2805418813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2805418813 is a deficient number, since it is larger than the sum of its proper divisors (121974755).

2805418813 is a wasteful number, since it uses less digits than its factorization.

2805418813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121974754.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 2805418813 is about 52966.2044420780. The cubic root of 2805418813 is about 1410.3683984483.

The spelling of 2805418813 in words is "two billion, eight hundred five million, four hundred eighteen thousand, eight hundred thirteen".