7800338813 has 2 divisors, whose sum is σ = 7800338814. Its totient is φ = 7800338812.

The previous prime is 7800338807. The next prime is 7800338863. The reversal of 7800338813 is 3188330087.

7800338813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6524277529 + 1276061284 = 80773^2 + 35722^2 .

It is a cyclic number.

It is not a de Polignac number, because 7800338813 - 2¹⁶ = 7800273277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7800338863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900169406 + 3900169407.

It is an arithmetic number, because the mean of its divisors is an integer number (3900169407).

Almost surely, 2^7800338813 is an apocalyptic number.

It is an amenable number.

7800338813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7800338813 is an equidigital number, since it uses as much as digits as its factorization.

7800338813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 7800338813 is about 88319.5267933428. The cubic root of 7800338813 is about 1983.2211972819.

The spelling of 7800338813 in words is "seven billion, eight hundred million, three hundred thirty-eight thousand, eight hundred thirteen".