180108961 has 4 divisors (see below), whose sum is σ = 189588400. Its totient is φ = 170629524.

The previous prime is 180108959. The next prime is 180108979. The reversal of 180108961 is 169801081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 180108961 - 2¹ = 180108959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180108161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4739691 + ... + 4739728.

It is an arithmetic number, because the mean of its divisors is an integer number (47397100).

Almost surely, 2^180108961 is an apocalyptic number.

It is an amenable number.

180108961 is a deficient number, since it is larger than the sum of its proper divisors (9479439).

180108961 is an equidigital number, since it uses as much as digits as its factorization.

180108961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479438.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 180108961 is about 13420.4679873691. The cubic root of 180108961 is about 564.7355234886.

The spelling of 180108961 in words is "one hundred eighty million, one hundred eight thousand, nine hundred sixty-one".