180920097 has 6 divisors (see below), whose sum is σ = 261329042. Its totient is φ = 120613392.

The previous prime is 180920063. The next prime is 180920099. The reversal of 180920097 is 790029081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 101425041 + 79495056 = 10071^2 + 8916^2 .

It is not a de Polignac number, because 180920097 - 2⁷ = 180919969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180920099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10051108 + ... + 10051125.

Almost surely, 2^180920097 is an apocalyptic number.

It is an amenable number.

180920097 is a deficient number, since it is larger than the sum of its proper divisors (80408945).

180920097 is a wasteful number, since it uses less digits than its factorization.

180920097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20102239 (or 20102236 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 180920097 is about 13450.6541476614. The cubic root of 180920097 is about 565.5820321114.

The spelling of 180920097 in words is "one hundred eighty million, nine hundred twenty thousand, ninety-seven".