9781830036 has 144 divisors (see below), whose sum is σ = 28002723840. Its totient is φ = 2851887360.

The previous prime is 9781830029. The next prime is 9781830049. The reversal of 9781830036 is 6300381879.

It is a happy number.

It is a super-2 number, since 2×9781830036² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9781829973 and 9781830000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3639085 + ... + 3641771.

It is an arithmetic number, because the mean of its divisors is an integer number (194463360).

Almost surely, 2^9781830036 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 9781830036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14001361920).

9781830036 is an abundant number, since it is smaller than the sum of its proper divisors (18220893804).

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

9781830036 is a wasteful number, since it uses less digits than its factorization.

9781830036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3049 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 9781830036 is about 98903.1346115986. The cubic root of 9781830036 is about 2138.6515827744.

The spelling of 9781830036 in words is "nine billion, seven hundred eighty-one million, eight hundred thirty thousand, thirty-six".