8380191643 has 2 divisors, whose sum is σ = 8380191644. Its totient is φ = 8380191642.

The previous prime is 8380191593. The next prime is 8380191709. The reversal of 8380191643 is 3461910838.

8380191643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8380191643 is a prime.

It is a super-2 number, since 2×8380191643² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8380191643.

It is not a weakly prime, because it can be changed into another prime (8380194643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4190095821 + 4190095822.

It is an arithmetic number, because the mean of its divisors is an integer number (4190095822).

Almost surely, 2^8380191643 is an apocalyptic number.

8380191643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8380191643 is an equidigital number, since it uses as much as digits as its factorization.

8380191643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 8380191643 is about 91543.3866699283. The cubic root of 8380191643 is about 2031.1935875798.

The spelling of 8380191643 in words is "eight billion, three hundred eighty million, one hundred ninety-one thousand, six hundred forty-three".