1180289880 has 768 divisors, whose sum is σ = 5283532800. Its totient is φ = 229547520.

The previous prime is 1180289857. The next prime is 1180289881. The reversal of 1180289880 is 889820811.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180289881) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14220319 + ... + 14220401.

It is an arithmetic number, because the mean of its divisors is an integer number (6879600).

Almost surely, 2^1180289880 is an apocalyptic number.

1180289880 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 1180289880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2641766400).

1180289880 is an abundant number, since it is smaller than the sum of its proper divisors (4103242920).

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

1180289880 is a wasteful number, since it uses less digits than its factorization.

1180289880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The square root of 1180289880 is about 34355.3471820618. The cubic root of 1180289880 is about 1056.8083299583.

The spelling of 1180289880 in words is "one billion, one hundred eighty million, two hundred eighty-nine thousand, eight hundred eighty".