9378538511 has 2 divisors, whose sum is σ = 9378538512. Its totient is φ = 9378538510.

The previous prime is 9378538459. The next prime is 9378538523. The reversal of 9378538511 is 1158358739.

It is a strong prime.

It is an emirp because it is prime and its reverse (1158358739) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9378538511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9378538511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9378538541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4689269255 + 4689269256.

It is an arithmetic number, because the mean of its divisors is an integer number (4689269256).

Almost surely, 2^9378538511 is an apocalyptic number.

9378538511 is a deficient number, since it is larger than the sum of its proper divisors (1).

9378538511 is an equidigital number, since it uses as much as digits as its factorization.

9378538511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 50.

The square root of 9378538511 is about 96842.8547235159. The cubic root of 9378538511 is about 2108.8469183968.

The spelling of 9378538511 in words is "nine billion, three hundred seventy-eight million, five hundred thirty-eight thousand, five hundred eleven".