7688308489 has 3 divisors (see below), whose sum is σ = 7688396173. Its totient is φ = 7688220806.

The previous prime is 7688308483. The next prime is 7688308493. The reversal of 7688308489 is 9848038867.

The square root of 7688308489 is 87683.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9848038867 = 59 ⋅166915913.

It is a de Polignac number, because none of the positive numbers 2^k-7688308489 is a prime.

It is a super-2 number, since 2×7688308489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7688308483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 43842 + ... + 131524.

Almost surely, 2^7688308489 is an apocalyptic number.

7688308489 is the 87683-rd square number.

7688308489 is the 43842-nd centered octagonal number.

It is an amenable number.

7688308489 is a deficient number, since it is larger than the sum of its proper divisors (87684).

7688308489 is an frugal number, since it uses more digits than its factorization.

7688308489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175366 (or 87683 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 61.

The cubic root of 7688308489 is about 1973.6808786040.

The spelling of 7688308489 in words is "seven billion, six hundred eighty-eight million, three hundred eight thousand, four hundred eighty-nine".