1161680980 has 24 divisors (see below), whose sum is σ = 2518225920. Its totient is φ = 449682720.

The previous prime is 1161680969. The next prime is 1161681023. The reversal of 1161680980 is 890861611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936220 + ... + 937459.

It is an arithmetic number, because the mean of its divisors is an integer number (104926080).

Almost surely, 2^1161680980 is an apocalyptic number.

1161680980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161680980 is an abundant number, since it is smaller than the sum of its proper divisors (1356544940).

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

1161680980 is a wasteful number, since it uses less digits than its factorization.

1161680980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873719 (or 1873717 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 1161680980 is about 34083.4414342214. The cubic root of 1161680980 is about 1051.2248683928.

The spelling of 1161680980 in words is "one billion, one hundred sixty-one million, six hundred eighty thousand, nine hundred eighty".