8201689819 has 2 divisors, whose sum is σ = 8201689820. Its totient is φ = 8201689818.

The previous prime is 8201689817. The next prime is 8201689829. The reversal of 8201689819 is 9189861028.

8201689819 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 not a de Polignac number, because 8201689819 - 2¹ = 8201689817 is a prime.

It is a super-2 number, since 2×8201689819² (a number of 21 digits) contains 22 as substring.

Together with 8201689817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8201689817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4100844909 + 4100844910.

It is an arithmetic number, because the mean of its divisors is an integer number (4100844910).

Almost surely, 2^8201689819 is an apocalyptic number.

8201689819 is a deficient number, since it is larger than the sum of its proper divisors (1).

8201689819 is an equidigital number, since it uses as much as digits as its factorization.

8201689819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 52.

The square root of 8201689819 is about 90563.1813652767. The cubic root of 8201689819 is about 2016.6681848162.

The spelling of 8201689819 in words is "eight billion, two hundred one million, six hundred eighty-nine thousand, eight hundred nineteen".