180840401 has 8 divisors (see below), whose sum is σ = 209291520. Its totient is φ = 153043488.

The previous prime is 180840397. The next prime is 180840419. The reversal of 180840401 is 104048081.

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

It is a cyclic number.

It is not a de Polignac number, because 180840401 - 2² = 180840397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180840431) 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, 162956 + ... + 164061.

It is an arithmetic number, because the mean of its divisors is an integer number (26161440).

Almost surely, 2^180840401 is an apocalyptic number.

It is an amenable number.

180840401 is a deficient number, since it is larger than the sum of its proper divisors (28451119).

180840401 is an equidigital number, since it uses as much as digits as its factorization.

180840401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327103.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 180840401 is about 13447.6912888421. The cubic root of 180840401 is about 565.4989728926.

Adding to 180840401 its reverse (104048081), we get a palindrome (284888482).

The spelling of 180840401 in words is "one hundred eighty million, eight hundred forty thousand, four hundred one".