180390097 has 4 divisors (see below), whose sum is σ = 180440176. Its totient is φ = 180340020.

The previous prime is 180390079. The next prime is 180390103. The reversal of 180390097 is 790093081.

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 180390097 - 2⁷ = 180389969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180390797) 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, 19179 + ... + 26992.

It is an arithmetic number, because the mean of its divisors is an integer number (45110044).

Almost surely, 2^180390097 is an apocalyptic number.

It is an amenable number.

180390097 is a deficient number, since it is larger than the sum of its proper divisors (50079).

180390097 is an equidigital number, since it uses as much as digits as its factorization.

180390097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50078.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 180390097 is about 13430.9380536134. The cubic root of 180390097 is about 565.0292067289.

The spelling of 180390097 in words is "one hundred eighty million, three hundred ninety thousand, ninety-seven".