1081803384 has 64 divisors (see below), whose sum is σ = 3033158400. Its totient is φ = 357223392.

The previous prime is 1081803343. The next prime is 1081803419. The reversal of 1081803384 is 4833081801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292 + ... + 46515.

It is an arithmetic number, because the mean of its divisors is an integer number (47393100).

Almost surely, 2^1081803384 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 1081803384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516579200).

1081803384 is an abundant number, since it is smaller than the sum of its proper divisors (1951355016).

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

1081803384 is a wasteful number, since it uses less digits than its factorization.

1081803384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46929 (or 46919 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1081803384 is about 32890.7796198266. The cubic root of 1081803384 is about 1026.5563140137.

The spelling of 1081803384 in words is "one billion, eighty-one million, eight hundred three thousand, three hundred eighty-four".