9813006820 has 24 divisors (see below), whose sum is σ = 20610072000. Its totient is φ = 3924677472.

The previous prime is 9813006803. The next prime is 9813006821. The reversal of 9813006820 is 286003189.

It is a self number, because there is not a number n which added to its sum of digits gives 9813006820.

It is not an unprimeable number, because it can be changed into a prime (9813006821) 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, 143451 + ... + 200509.

It is an arithmetic number, because the mean of its divisors is an integer number (858753000).

Almost surely, 2^9813006820 is an apocalyptic number.

It is an amenable number.

9813006820 is an abundant number, since it is smaller than the sum of its proper divisors (10797065180).

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

9813006820 is a wasteful number, since it uses less digits than its factorization.

9813006820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65667 (or 65665 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 9813006820 is about 99060.6219443427. The cubic root of 9813006820 is about 2140.9212864386.

The spelling of 9813006820 in words is "nine billion, eight hundred thirteen million, six thousand, eight hundred twenty".