8688519842 has 18 divisors (see below), whose sum is σ = 13758783633. Its totient is φ = 4114428264.

The previous prime is 8688519841. The next prime is 8688519871. The reversal of 8688519842 is 2489158868.

It can be written as a sum of positive squares in 2 ways, for example, as 5778888361 + 2909631481 = 76019^2 + 53941^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=65911.

It is not an unprimeable number, because it can be changed into a prime (8688519841) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2502884 + ... + 2506352.

Almost surely, 2^8688519842 is an apocalyptic number.

8688519842 is a deficient number, since it is larger than the sum of its proper divisors (5070263791).

8688519842 is an frugal number, since it uses more digits than its factorization.

8688519842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6978 (or 3490 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 59.

The square root of 8688519842 is about 93212.2301095731. The cubic root of 8688519842 is about 2055.8050683042.

The spelling of 8688519842 in words is "eight billion, six hundred eighty-eight million, five hundred nineteen thousand, eight hundred forty-two".