6813654949 has 2 divisors, whose sum is σ = 6813654950. Its totient is φ = 6813654948.

The previous prime is 6813654919. The next prime is 6813654979. The reversal of 6813654949 is 9494563186.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (6813654919) and next prime (6813654979).

It can be written as a sum of positive squares in only one way, i.e., 6169002849 + 644652100 = 78543^2 + 25390^2 .

It is a cyclic number.

It is not a de Polignac number, because 6813654949 - 2⁵ = 6813654917 is a prime.

It is a super-3 number, since 3×6813654949³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6813654949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6813654919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406827474 + 3406827475.

It is an arithmetic number, because the mean of its divisors is an integer number (3406827475).

Almost surely, 2^6813654949 is an apocalyptic number.

It is an amenable number.

6813654949 is a deficient number, since it is larger than the sum of its proper divisors (1).

6813654949 is an equidigital number, since it uses as much as digits as its factorization.

6813654949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 55.

The square root of 6813654949 is about 82544.8662788910. The cubic root of 6813654949 is about 1895.8037538823.

The spelling of 6813654949 in words is "six billion, eight hundred thirteen million, six hundred fifty-four thousand, nine hundred forty-nine".