180465121 has 4 divisors (see below), whose sum is σ = 180781744. Its totient is φ = 180148500.

The previous prime is 180465119. The next prime is 180465127. The reversal of 180465121 is 121564081.

180465121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 180465121 - 2¹ = 180465119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 180465121.

It is not an unprimeable number, because it can be changed into a prime (180465127) 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, 157455 + ... + 158596.

It is an arithmetic number, because the mean of its divisors is an integer number (45195436).

Almost surely, 2^180465121 is an apocalyptic number.

It is an amenable number.

180465121 is a deficient number, since it is larger than the sum of its proper divisors (316623).

180465121 is an equidigital number, since it uses as much as digits as its factorization.

180465121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316622.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 180465121 is about 13433.7307178609. The cubic root of 180465121 is about 565.1075275024.

The spelling of 180465121 in words is "one hundred eighty million, four hundred sixty-five thousand, one hundred twenty-one".