1081688884 has 24 divisors (see below), whose sum is σ = 1912212288. Its totient is φ = 535355520.

The previous prime is 1081688863. The next prime is 1081688887. The reversal of 1081688884 is 4888861801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081688887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589849 + ... + 591679.

It is an arithmetic number, because the mean of its divisors is an integer number (79675512).

Almost surely, 2^1081688884 is an apocalyptic number.

It is an amenable number.

1081688884 is a deficient number, since it is larger than the sum of its proper divisors (830523404).

1081688884 is a wasteful number, since it uses less digits than its factorization.

1081688884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255 (or 3253 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 52.

The square root of 1081688884 is about 32889.0389643723. The cubic root of 1081688884 is about 1026.5200952187.

The spelling of 1081688884 in words is "one billion, eighty-one million, six hundred eighty-eight thousand, eight hundred eighty-four".