9851998804 has 24 divisors (see below), whose sum is σ = 17284543808. Its totient is φ = 4913576640.

The previous prime is 9851998781. The next prime is 9851998811. The reversal of 9851998804 is 4088991589.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3446944 + ... + 3449800.

Almost surely, 2^9851998804 is an apocalyptic number.

It is an amenable number.

9851998804 is a deficient number, since it is larger than the sum of its proper divisors (7432545004).

9851998804 is a wasteful number, since it uses less digits than its factorization.

9851998804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735 (or 4733 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 61.

The square root of 9851998804 is about 99257.2355246709. The cubic root of 9851998804 is about 2143.7531892344.

The spelling of 9851998804 in words is "nine billion, eight hundred fifty-one million, nine hundred ninety-eight thousand, eight hundred four".