9231784380 has 768 divisors, whose sum is σ = 38447861760. Its totient is φ = 1783627776.

The previous prime is 9231784379. The next prime is 9231784411. The reversal of 9231784380 is 834871329.

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 255 ways as a sum of consecutive naturals, for example, 35921212 + ... + 35921468.

It is an arithmetic number, because the mean of its divisors is an integer number (50062320).

Almost surely, 2^9231784380 is an apocalyptic number.

9231784380 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 9231784380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19223930880).

9231784380 is an abundant number, since it is smaller than the sum of its proper divisors (29216077380).

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

9231784380 is a wasteful number, since it uses less digits than its factorization.

9231784380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 9231784380 is about 96082.1751419065. The cubic root of 9231784380 is about 2097.7893880522.

The spelling of 9231784380 in words is "nine billion, two hundred thirty-one million, seven hundred eighty-four thousand, three hundred eighty".