1181928482820 has 72 divisors (see below), whose sum is σ = 3708810083160. Its totient is φ = 304312619520.

The previous prime is 1181928482771. The next prime is 1181928482821. The reversal of 1181928482820 is 282848291811.

It is a happy number.

1181928482820 is a `hidden beast` number, since 1 + 1 + 81 + 9 + 2 + 8 + 482 + 82 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35864026884 + 1146064455936 = 189378^2 + 1070544^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1181928482821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113206321 + ... + 113216760.

It is an arithmetic number, because the mean of its divisors is an integer number (51511251155).

Almost surely, 2^{1181928482820} is an apocalyptic number.

1181928482820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1181928482820 is an abundant number, since it is smaller than the sum of its proper divisors (2526881600340).

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

1181928482820 is a wasteful number, since it uses less digits than its factorization.

1181928482820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226423125 (or 226423120 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 54.

The spelling of 1181928482820 in words is "one trillion, one hundred eighty-one billion, nine hundred twenty-eight million, four hundred eighty-two thousand, eight hundred twenty".