6869743649 has 2 divisors, whose sum is σ = 6869743650. Its totient is φ = 6869743648.

The previous prime is 6869743637. The next prime is 6869743669. The reversal of 6869743649 is 9463479686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5269743649 + 1600000000 = 72593^2 + 40000^2 .

It is a cyclic number.

It is not a de Polignac number, because 6869743649 - 2⁴ = 6869743633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6869743591 and 6869743600.

It is not a weakly prime, because it can be changed into another prime (6869743669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3434871824 + 3434871825.

It is an arithmetic number, because the mean of its divisors is an integer number (3434871825).

Almost surely, 2^6869743649 is an apocalyptic number.

It is an amenable number.

6869743649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6869743649 is an equidigital number, since it uses as much as digits as its factorization.

6869743649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 62.

The square root of 6869743649 is about 82883.9167088525. The cubic root of 6869743649 is about 1900.9915091791.

The spelling of 6869743649 in words is "six billion, eight hundred sixty-nine million, seven hundred forty-three thousand, six hundred forty-nine".