8305780013 has 2 divisors, whose sum is σ = 8305780014. Its totient is φ = 8305780012.

The previous prime is 8305780009. The next prime is 8305780027. The reversal of 8305780013 is 3100875038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7562563369 + 743216644 = 86963^2 + 27262^2 .

It is a cyclic number.

It is not a de Polignac number, because 8305780013 - 2² = 8305780009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8305780913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4152890006 + 4152890007.

It is an arithmetic number, because the mean of its divisors is an integer number (4152890007).

Almost surely, 2^8305780013 is an apocalyptic number.

It is an amenable number.

8305780013 is a deficient number, since it is larger than the sum of its proper divisors (1).

8305780013 is an equidigital number, since it uses as much as digits as its factorization.

8305780013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 8305780013 is about 91136.0522131610. The cubic root of 8305780013 is about 2025.1637331816.

The spelling of 8305780013 in words is "eight billion, three hundred five million, seven hundred eighty thousand, thirteen".