8189191039 has 2 divisors, whose sum is σ = 8189191040. Its totient is φ = 8189191038.

The previous prime is 8189191001. The next prime is 8189191051. The reversal of 8189191039 is 9301919818.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8189191039 - 2¹¹ = 8189188991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8189190983 and 8189191001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8189191069) 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, 4094595519 + 4094595520.

It is an arithmetic number, because the mean of its divisors is an integer number (4094595520).

Almost surely, 2^8189191039 is an apocalyptic number.

8189191039 is a deficient number, since it is larger than the sum of its proper divisors (1).

8189191039 is an equidigital number, since it uses as much as digits as its factorization.

8189191039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 49.

The square root of 8189191039 is about 90494.1491976139. The cubic root of 8189191039 is about 2015.6432453478.

The spelling of 8189191039 in words is "eight billion, one hundred eighty-nine million, one hundred ninety-one thousand, thirty-nine".