6989668519 has 2 divisors, whose sum is σ = 6989668520. Its totient is φ = 6989668518.

The previous prime is 6989668429. The next prime is 6989668531. The reversal of 6989668519 is 9158669896.

6989668519 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6989668519 - 2⁷ = 6989668391 is a prime.

It is a super-2 number, since 2×6989668519² = 97710932010999306722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6989668579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494834259 + 3494834260.

It is an arithmetic number, because the mean of its divisors is an integer number (3494834260).

Almost surely, 2^6989668519 is an apocalyptic number.

6989668519 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989668519 is an equidigital number, since it uses as much as digits as its factorization.

6989668519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50388480, while the sum is 67.

The square root of 6989668519 is about 83604.2374464357. The cubic root of 6989668519 is about 1911.9896045219.

The spelling of 6989668519 in words is "six billion, nine hundred eighty-nine million, six hundred sixty-eight thousand, five hundred nineteen".