9816967820 has 24 divisors (see below), whose sum is σ = 22489781328. Its totient is φ = 3569806400.

The previous prime is 9816967759. The next prime is 9816967829. The reversal of 9816967820 is 287696189.

It is not an unprimeable number, because it can be changed into a prime (9816967829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22311071 + ... + 22311510.

It is an arithmetic number, because the mean of its divisors is an integer number (937074222).

Almost surely, 2^9816967820 is an apocalyptic number.

It is an amenable number.

9816967820 is an abundant number, since it is smaller than the sum of its proper divisors (12672813508).

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

9816967820 is a wasteful number, since it uses less digits than its factorization.

9816967820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44622601 (or 44622599 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 9816967820 is about 99080.6127352874. The cubic root of 9816967820 is about 2141.2093071790.

The spelling of 9816967820 in words is "nine billion, eight hundred sixteen million, nine hundred sixty-seven thousand, eight hundred twenty".