9819356764 has 72 divisors (see below), whose sum is σ = 20676243840. Its totient is φ = 4064256000.

The previous prime is 9819356741. The next prime is 9819356773. The reversal of 9819356764 is 4676539189.

It is a junction number, because it is equal to n+sod(n) for n = 9819356699 and 9819356708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3650332 + ... + 3653020.

Almost surely, 2^9819356764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9819356764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10338121920).

9819356764 is an abundant number, since it is smaller than the sum of its proper divisors (10856887076).

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

9819356764 is a wasteful number, since it uses less digits than its factorization.

9819356764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3330 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 58.

The square root of 9819356764 is about 99092.6675592094. The cubic root of 9819356764 is about 2141.3829797545.

The spelling of 9819356764 in words is "nine billion, eight hundred nineteen million, three hundred fifty-six thousand, seven hundred sixty-four".