1083871992 has 128 divisors (see below), whose sum is σ = 3305111040. Its totient is φ = 289136640.

The previous prime is 1083871991. The next prime is 1083872011. The reversal of 1083871992 is 2991783801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083871991) 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 31 ways as a sum of consecutive naturals, for example, 372688 + ... + 375584.

It is an arithmetic number, because the mean of its divisors is an integer number (25821180).

Almost surely, 2^1083871992 is an apocalyptic number.

1083871992 is a gapful number since it is divisible by the number (12) 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 1083871992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652555520).

1083871992 is an abundant number, since it is smaller than the sum of its proper divisors (2221239048).

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

1083871992 is a wasteful number, since it uses less digits than its factorization.

1083871992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061 (or 3057 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 1083871992 is about 32922.2112258578. The cubic root of 1083871992 is about 1027.2102191921.

The spelling of 1083871992 in words is "one billion, eighty-three million, eight hundred seventy-one thousand, nine hundred ninety-two".