6989684189 has 2 divisors, whose sum is σ = 6989684190. Its totient is φ = 6989684188.

The previous prime is 6989684179. The next prime is 6989684279. The reversal of 6989684189 is 9814869896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6966740089 + 22944100 = 83467^2 + 4790^2 .

It is a cyclic number.

It is not a de Polignac number, because 6989684189 - 2⁸ = 6989683933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6989684129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494842094 + 3494842095.

It is an arithmetic number, because the mean of its divisors is an integer number (3494842095).

Almost surely, 2^6989684189 is an apocalyptic number.

It is an amenable number.

6989684189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989684189 is an equidigital number, since it uses as much as digits as its factorization.

6989684189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53747712, while the sum is 68.

The square root of 6989684189 is about 83604.3311617287. The cubic root of 6989684189 is about 1911.9910333381.

The spelling of 6989684189 in words is "six billion, nine hundred eighty-nine million, six hundred eighty-four thousand, one hundred eighty-nine".