180840986 has 8 divisors (see below), whose sum is σ = 271925940. Its totient is φ = 90199008.

The previous prime is 180840967. The next prime is 180840991. The reversal of 180840986 is 689048081.

It is a happy number.

180840986 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 173738761 + 7102225 = 13181^2 + 2665^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109721 + ... + 111356.

Almost surely, 2^180840986 is an apocalyptic number.

180840986 is a deficient number, since it is larger than the sum of its proper divisors (91084954).

180840986 is a wasteful number, since it uses less digits than its factorization.

180840986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221488.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 180840986 is about 13447.7130397700. The cubic root of 180840986 is about 565.4995826689.

The spelling of 180840986 in words is "one hundred eighty million, eight hundred forty thousand, nine hundred eighty-six".