180808081 has 8 divisors (see below), whose sum is σ = 182298600. Its totient is φ = 179324160.

The previous prime is 180808063. The next prime is 180808091.

180808081 is nontrivially palindromic in base 10.

180808081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18627856 + 162180225 = 4316^2 + 12735^2 .

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 180808081 - 2¹³ = 180799889 is a prime.

It is a super-2 number, since 2×180808081² = 65383124309805122, which contains 22 as substring.

180808081 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180808021) 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, 63435 + ... + 66223.

It is an arithmetic number, because the mean of its divisors is an integer number (22787325).

Almost surely, 2^180808081 is an apocalyptic number.

It is an amenable number.

180808081 is a deficient number, since it is larger than the sum of its proper divisors (1490519).

180808081 is a wasteful number, since it uses less digits than its factorization.

180808081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299.

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 180808081 is about 13446.4895418842. The cubic root of 180808081 is about 565.4652820145.

The spelling of 180808081 in words is "one hundred eighty million, eight hundred eight thousand, eighty-one".