8102878919 has 2 divisors, whose sum is σ = 8102878920. Its totient is φ = 8102878918.

The previous prime is 8102878907. The next prime is 8102878957. The reversal of 8102878919 is 9198782018.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8102878919 - 2²⁴ = 8086101703 is a prime.

It is a super-2 number, since 2×8102878919² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8102878319) 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 as a sum of consecutive naturals, namely, 4051439459 + 4051439460.

It is an arithmetic number, because the mean of its divisors is an integer number (4051439460).

Almost surely, 2^8102878919 is an apocalyptic number.

8102878919 is a deficient number, since it is larger than the sum of its proper divisors (1).

8102878919 is an equidigital number, since it uses as much as digits as its factorization.

8102878919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 53.

The square root of 8102878919 is about 90015.9925735422. The cubic root of 8102878919 is about 2008.5367533275.

The spelling of 8102878919 in words is "eight billion, one hundred two million, eight hundred seventy-eight thousand, nine hundred nineteen".