7688457109 has 4 divisors (see below), whose sum is σ = 7703742816. Its totient is φ = 7673171404.

The previous prime is 7688457107. The next prime is 7688457121. The reversal of 7688457109 is 9017548867.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9017548867 = 17 ⋅530444051.

It is a cyclic number.

It is not a de Polignac number, because 7688457109 - 2¹ = 7688457107 is a prime.

It is a super-2 number, since 2×7688457109² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7688457109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7688457107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7642099 + ... + 7643104.

It is an arithmetic number, because the mean of its divisors is an integer number (1925935704).

Almost surely, 2^7688457109 is an apocalyptic number.

It is an amenable number.

7688457109 is a deficient number, since it is larger than the sum of its proper divisors (15285707).

7688457109 is a wasteful number, since it uses less digits than its factorization.

7688457109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15285706.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The square root of 7688457109 is about 87683.8474805936. The cubic root of 7688457109 is about 1973.6935960334.

The spelling of 7688457109 in words is "seven billion, six hundred eighty-eight million, four hundred fifty-seven thousand, one hundred nine".