1181118852 has 36 divisors (see below), whose sum is σ = 2990485680. Its totient is φ = 393062832.

The previous prime is 1181118823. The next prime is 1181118889. The reversal of 1181118852 is 2588111811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4218 + ... + 48785.

Almost surely, 2^1181118852 is an apocalyptic number.

1181118852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1181118852 is an abundant number, since it is smaller than the sum of its proper divisors (1809366828).

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

1181118852 is a wasteful number, since it uses less digits than its factorization.

1181118852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53632 (or 53627 counting only the distinct ones).

The product of its digits is 5120, while the sum is 36.

The square root of 1181118852 is about 34367.4097365513. The cubic root of 1181118852 is about 1057.0556871286.

The spelling of 1181118852 in words is "one billion, one hundred eighty-one million, one hundred eighteen thousand, eight hundred fifty-two".