180116681 has 8 divisors (see below), whose sum is σ = 183079680. Its totient is φ = 177176448.

The previous prime is 180116663. The next prime is 180116693. The reversal of 180116681 is 186611081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180116681 - 2¹⁰ = 180115657 is a prime.

It is a super-2 number, since 2×180116681² = 64884037548911522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180116081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10640 + ... + 21758.

It is an arithmetic number, because the mean of its divisors is an integer number (22884960).

Almost surely, 2^180116681 is an apocalyptic number.

It is an amenable number.

180116681 is a deficient number, since it is larger than the sum of its proper divisors (2962999).

180116681 is a wasteful number, since it uses less digits than its factorization.

180116681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11383.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 180116681 is about 13420.7556046595. The cubic root of 180116681 is about 564.7435921154.

The spelling of 180116681 in words is "one hundred eighty million, one hundred sixteen thousand, six hundred eighty-one".