180973697 has 8 divisors (see below), whose sum is σ = 186229032. Its totient is φ = 175737600.

The previous prime is 180973693. The next prime is 180973711. The reversal of 180973697 is 796379081.

It can be written as a sum of positive squares in 4 ways, for example, as 114404416 + 66569281 = 10696^2 + 8159^2 .

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 180973697 - 2² = 180973693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180973693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15497 + ... + 24537.

It is an arithmetic number, because the mean of its divisors is an integer number (23278629).

Almost surely, 2^180973697 is an apocalyptic number.

It is an amenable number.

180973697 is a deficient number, since it is larger than the sum of its proper divisors (5255335).

180973697 is an equidigital number, since it uses as much as digits as its factorization.

180973697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 180973697 is about 13452.6464682604. The cubic root of 180973697 is about 565.6378803453.

The spelling of 180973697 in words is "one hundred eighty million, nine hundred seventy-three thousand, six hundred ninety-seven".