8078388919 has 2 divisors, whose sum is σ = 8078388920. Its totient is φ = 8078388918.

The previous prime is 8078388839. The next prime is 8078388961. The reversal of 8078388919 is 9198838708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8078388919 - 2¹¹ = 8078386871 is a prime.

It is a super-2 number, since 2×8078388919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8078382919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4039194459 + 4039194460.

It is an arithmetic number, because the mean of its divisors is an integer number (4039194460).

Almost surely, 2^8078388919 is an apocalyptic number.

8078388919 is a deficient number, since it is larger than the sum of its proper divisors (1).

8078388919 is an equidigital number, since it uses as much as digits as its factorization.

8078388919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 61.

The square root of 8078388919 is about 89879.8582497770. The cubic root of 8078388919 is about 2006.5111891210.

The spelling of 8078388919 in words is "eight billion, seventy-eight million, three hundred eighty-eight thousand, nine hundred nineteen".