1083989844 has 48 divisors (see below), whose sum is σ = 3211824000. Its totient is φ = 309711168.

The previous prime is 1083989789. The next prime is 1083989897. The reversal of 1083989844 is 4489893801.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 716169 + ... + 717680.

It is an arithmetic number, because the mean of its divisors is an integer number (66913000).

Almost surely, 2^1083989844 is an apocalyptic number.

1083989844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1083989844 is an abundant number, since it is smaller than the sum of its proper divisors (2127834156).

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

1083989844 is a wasteful number, since it uses less digits than its factorization.

1083989844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433869 (or 1433861 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 1083989844 is about 32924.0010326813. The cubic root of 1083989844 is about 1027.2474481860.

The spelling of 1083989844 in words is "one billion, eighty-three million, nine hundred eighty-nine thousand, eight hundred forty-four".