9836440380 has 576 divisors, whose sum is σ = 36013880448. Its totient is φ = 2149908480.

The previous prime is 9836440379. The next prime is 9836440409. The reversal of 9836440380 is 830446389.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 60346179 + ... + 60346341.

It is an arithmetic number, because the mean of its divisors is an integer number (62524098).

Almost surely, 2^9836440380 is an apocalyptic number.

9836440380 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9836440380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18006940224).

9836440380 is an abundant number, since it is smaller than the sum of its proper divisors (26177440068).

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

9836440380 is a wasteful number, since it uses less digits than its factorization.

9836440380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 9836440380 is about 99178.8303016324. The cubic root of 9836440380 is about 2142.6241122975.

The spelling of 9836440380 in words is "nine billion, eight hundred thirty-six million, four hundred forty thousand, three hundred eighty".