180669009 has 8 divisors (see below), whose sum is σ = 241420960. Its totient is φ = 120181536.

The previous prime is 180668977. The next prime is 180669011. The reversal of 180669009 is 900966081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 180669009 - 2⁵ = 180668977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180669019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64519 + ... + 67260.

It is an arithmetic number, because the mean of its divisors is an integer number (30177620).

Almost surely, 2^180669009 is an apocalyptic number.

It is an amenable number.

180669009 is a deficient number, since it is larger than the sum of its proper divisors (60751951).

180669009 is a wasteful number, since it uses less digits than its factorization.

180669009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132239.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 180669009 is about 13441.3172345570. The cubic root of 180669009 is about 565.3202653418.

The spelling of 180669009 in words is "one hundred eighty million, six hundred sixty-nine thousand, nine".