8135380819 has 2 divisors, whose sum is σ = 8135380820. Its totient is φ = 8135380818.

The previous prime is 8135380811. The next prime is 8135380901. The reversal of 8135380819 is 9180835318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8135380819 - 2³ = 8135380811 is a prime.

It is a super-2 number, since 2×8135380819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8135380811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4067690409 + 4067690410.

It is an arithmetic number, because the mean of its divisors is an integer number (4067690410).

Almost surely, 2^8135380819 is an apocalyptic number.

8135380819 is a deficient number, since it is larger than the sum of its proper divisors (1).

8135380819 is an equidigital number, since it uses as much as digits as its factorization.

8135380819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 8135380819 is about 90196.3459293113. The cubic root of 8135380819 is about 2011.2186877746.

The spelling of 8135380819 in words is "eight billion, one hundred thirty-five million, three hundred eighty thousand, eight hundred nineteen".