180989081 has 8 divisors (see below), whose sum is σ = 222755904. Its totient is φ = 143200080.

The previous prime is 180989069. The next prime is 180989113.

It is a happy number.

180989081 is nontrivially palindromic in base 10.

180989081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180989081 is a prime.

It is a super-2 number, since 2×180989081² = 65514094882449122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (180989051) 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, 994355 + ... + 994536.

It is an arithmetic number, because the mean of its divisors is an integer number (27844488).

Almost surely, 2^180989081 is an apocalyptic number.

It is an amenable number.

180989081 is a deficient number, since it is larger than the sum of its proper divisors (41766823).

180989081 is a wasteful number, since it uses less digits than its factorization.

180989081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988911.

The product of its (nonzero) digits is 41472, while the sum is 44.

The square root of 180989081 is about 13453.2182395143. The cubic root of 180989081 is about 565.6539075852.

The spelling of 180989081 in words is "one hundred eighty million, nine hundred eighty-nine thousand, eighty-one".