9878681487 has 32 divisors (see below), whose sum is σ = 14136145920. Its totient is φ = 6114516480.

The previous prime is 9878681437. The next prime is 9878681503. The reversal of 9878681487 is 7841868789.

It is not a de Polignac number, because 9878681487 - 2⁷ = 9878681359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878681437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1409562 + ... + 1416552.

It is an arithmetic number, because the mean of its divisors is an integer number (441754560).

Almost surely, 2^9878681487 is an apocalyptic number.

9878681487 is a deficient number, since it is larger than the sum of its proper divisors (4257464433).

9878681487 is a wasteful number, since it uses less digits than its factorization.

9878681487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7383.

The product of its digits is 43352064, while the sum is 66.

The square root of 9878681487 is about 99391.5564170317. The cubic root of 9878681487 is about 2145.6867909074.

The spelling of 9878681487 in words is "nine billion, eight hundred seventy-eight million, six hundred eighty-one thousand, four hundred eighty-seven".