7684385749 has 2 divisors, whose sum is σ = 7684385750. Its totient is φ = 7684385748.

The previous prime is 7684385729. The next prime is 7684385771. The reversal of 7684385749 is 9475834867.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5443783524 + 2240602225 = 73782^2 + 47335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7684385749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7684385719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3842192874 + 3842192875.

It is an arithmetic number, because the mean of its divisors is an integer number (3842192875).

Almost surely, 2^7684385749 is an apocalyptic number.

It is an amenable number.

7684385749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7684385749 is an equidigital number, since it uses as much as digits as its factorization.

7684385749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 61.

The square root of 7684385749 is about 87660.6282717618. The cubic root of 7684385749 is about 1973.3451500509.

The spelling of 7684385749 in words is "seven billion, six hundred eighty-four million, three hundred eighty-five thousand, seven hundred forty-nine".