1181330844 has 12 divisors (see below), whose sum is σ = 2756438664. Its totient is φ = 393776944.

The previous prime is 1181330831. The next prime is 1181330851. The reversal of 1181330844 is 4480331811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49222107 + ... + 49222130.

It is an arithmetic number, because the mean of its divisors is an integer number (229703222).

Almost surely, 2^1181330844 is an apocalyptic number.

It is an amenable number.

1181330844 is an abundant number, since it is smaller than the sum of its proper divisors (1575107820).

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

1181330844 is a wasteful number, since it uses less digits than its factorization.

1181330844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98444244 (or 98444242 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1181330844 is about 34370.4937991877. The cubic root of 1181330844 is about 1057.1189248921.

The spelling of 1181330844 in words is "one billion, one hundred eighty-one million, three hundred thirty thousand, eight hundred forty-four".