8947656378 has 24 divisors (see below), whose sum is σ = 19389115668. Its totient is φ = 2982163392.

The previous prime is 8947656373. The next prime is 8947656383. The reversal of 8947656378 is 8736567498.

8947656378 is a `hidden beast` number, since 89 + 476 + 56 + 37 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (8947656373) and next prime (8947656383).

It can be written as a sum of positive squares in 2 ways, for example, as 8677481409 + 270174969 = 93153^2 + 16437^2 .

It is not an unprimeable number, because it can be changed into a prime (8947656371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132126 + ... + 188022.

Almost surely, 2^8947656378 is an apocalyptic number.

8947656378 is an abundant number, since it is smaller than the sum of its proper divisors (10441459290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8947656378 is a wasteful number, since it uses less digits than its factorization.

8947656378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64798 (or 64795 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The square root of 8947656378 is about 94592.0524039943. The cubic root of 8947656378 is about 2076.0434199100.

The spelling of 8947656378 in words is "eight billion, nine hundred forty-seven million, six hundred fifty-six thousand, three hundred seventy-eight".