2809339813 has 8 divisors (see below), whose sum is σ = 3211413632. Its totient is φ = 2407450896.

The previous prime is 2809339759. The next prime is 2809339831. The reversal of 2809339813 is 3189339082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2809339813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2809339843) 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 7 ways as a sum of consecutive naturals, for example, 11970 + ... + 75907.

It is an arithmetic number, because the mean of its divisors is an integer number (401426704).

Almost surely, 2^2809339813 is an apocalyptic number.

It is an amenable number.

2809339813 is a deficient number, since it is larger than the sum of its proper divisors (402073819).

2809339813 is an equidigital number, since it uses as much as digits as its factorization.

2809339813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92451.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2809339813 is about 53003.2056860715. The cubic root of 2809339813 is about 1411.0251607707.

The spelling of 2809339813 in words is "two billion, eight hundred nine million, three hundred thirty-nine thousand, eight hundred thirteen".