1081830817920 has 256 divisors, whose sum is σ = 3602475233280. Its totient is φ = 275817246720.

The previous prime is 1081830817913. The next prime is 1081830817931. The reversal of 1081830817920 is 297180381801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1081830817920.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4830667 + ... + 5049653.

It is an arithmetic number, because the mean of its divisors is an integer number (14072168880).

Almost surely, 2^{1081830817920} is an apocalyptic number.

1081830817920 is a gapful number since it is divisible by the number (10) 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 1081830817920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801237616640).

1081830817920 is an abundant number, since it is smaller than the sum of its proper divisors (2520644415360).

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

1081830817920 is a wasteful number, since it uses less digits than its factorization.

1081830817920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219123 (or 219111 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 48.

The spelling of 1081830817920 in words is "one trillion, eighty-one billion, eight hundred thirty million, eight hundred seventeen thousand, nine hundred twenty".