180668369 has 4 divisors (see below), whose sum is σ = 206478144. Its totient is φ = 154858596.

The previous prime is 180668353. The next prime is 180668387. The reversal of 180668369 is 963866081.

180668369 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, and also an emirpimes, since its reverse is a distinct semiprime: 963866081 = 13709 ⋅70309.

It is a cyclic number.

It is not a de Polignac number, because 180668369 - 2⁴ = 180668353 is a prime.

It is a super-2 number, since 2×180668369² = 65282119114240322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180662369) 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, 12904877 + ... + 12904890.

It is an arithmetic number, because the mean of its divisors is an integer number (51619536).

Almost surely, 2^180668369 is an apocalyptic number.

It is an amenable number.

180668369 is a deficient number, since it is larger than the sum of its proper divisors (25809775).

180668369 is an equidigital number, since it uses as much as digits as its factorization.

180668369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25809774.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 180668369 is about 13441.2934273455. The cubic root of 180668369 is about 565.3195978128.

The spelling of 180668369 in words is "one hundred eighty million, six hundred sixty-eight thousand, three hundred sixty-nine".