1121871760 has 80 divisors (see below), whose sum is σ = 2644920000. Its totient is φ = 442510848.

The previous prime is 1121871749. The next prime is 1121871823. The reversal of 1121871760 is 671781211.

It is a tau number, because it is divible by the number of its divisors (80).

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, 2247991 + ... + 2248489.

It is an arithmetic number, because the mean of its divisors is an integer number (33061500).

Almost surely, 2^1121871760 is an apocalyptic number.

1121871760 is a gapful number since it is divisible by the number (10) 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 1121871760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322460000).

1121871760 is an abundant number, since it is smaller than the sum of its proper divisors (1523048240).

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

1121871760 is a wasteful number, since it uses less digits than its factorization.

1121871760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 34.

The square root of 1121871760 is about 33494.3541511103. The cubic root of 1121871760 is about 1039.0770164147.

The spelling of 1121871760 in words is "one billion, one hundred twenty-one million, eight hundred seventy-one thousand, seven hundred sixty".