9894715816 has 16 divisors (see below), whose sum is σ = 18856733940. Its totient is φ = 4866253440.

The previous prime is 9894715799. The next prime is 9894715867. The reversal of 9894715816 is 6185174989.

It can be written as a sum of positive squares in 2 ways, for example, as 9341995716 + 552720100 = 96654^2 + 23510^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10137541 + ... + 10138516.

Almost surely, 2^9894715816 is an apocalyptic number.

It is an amenable number.

9894715816 is a deficient number, since it is larger than the sum of its proper divisors (8962018124).

9894715816 is a wasteful number, since it uses less digits than its factorization.

9894715816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20276124 (or 20276120 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 58.

The square root of 9894715816 is about 99472.1861426600. The cubic root of 9894715816 is about 2146.8470689063.

The spelling of 9894715816 in words is "nine billion, eight hundred ninety-four million, seven hundred fifteen thousand, eight hundred sixteen".