1083995856 has 120 divisors (see below), whose sum is σ = 3112575336. Its totient is φ = 352035840.

The previous prime is 1083995851. The next prime is 1083995863. The reversal of 1083995856 is 6585993801.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 375584400 + 708411456 = 19380^2 + 26616^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083995851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1319926 + ... + 1320746.

Almost surely, 2^1083995856 is an apocalyptic number.

1083995856 is a gapful number since it is divisible by the number (16) 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 1083995856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556287668).

1083995856 is an abundant number, since it is smaller than the sum of its proper divisors (2028579480).

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

1083995856 is a wasteful number, since it uses less digits than its factorization.

1083995856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The square root of 1083995856 is about 32924.0923337303. The cubic root of 1083995856 is about 1027.2493472814.

The spelling of 1083995856 in words is "one billion, eighty-three million, nine hundred ninety-five thousand, eight hundred fifty-six".