1180320885 has 24 divisors (see below), whose sum is σ = 2046690360. Its totient is φ = 629258112.

The previous prime is 1180320881. The next prime is 1180320887. The reversal of 1180320885 is 5880230811.

It can be written as a sum of positive squares in 4 ways, for example, as 215473041 + 964847844 = 14679^2 + 31062^2 .

It is not a de Polignac number, because 1180320885 - 2² = 1180320881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180320881) 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, 212767 + ... + 218243.

It is an arithmetic number, because the mean of its divisors is an integer number (85278765).

Almost surely, 2^1180320885 is an apocalyptic number.

1180320885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1180320885 is a deficient number, since it is larger than the sum of its proper divisors (866369475).

1180320885 is a wasteful number, since it uses less digits than its factorization.

1180320885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10277 (or 10274 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1180320885 is about 34355.7984188987. The cubic root of 1180320885 is about 1056.8175836329.

The spelling of 1180320885 in words is "one billion, one hundred eighty million, three hundred twenty thousand, eight hundred eighty-five".