18408201 has 8 divisors (see below), whose sum is σ = 28050624. Its totient is φ = 10518960.

The previous prime is 18408199. The next prime is 18408227. The reversal of 18408201 is 10280481.

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

It is not a de Polignac number, because 18408201 - 2¹ = 18408199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18408281) 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, 438270 + ... + 438311.

It is an arithmetic number, because the mean of its divisors is an integer number (3506328).

Almost surely, 2^18408201 is an apocalyptic number.

It is an amenable number.

18408201 is a deficient number, since it is larger than the sum of its proper divisors (9642423).

18408201 is an equidigital number, since it uses as much as digits as its factorization.

18408201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876591.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 18408201 is about 4290.4779454042. The cubic root of 18408201 is about 264.0404408892.

Adding to 18408201 its reverse (10280481), we get a palindrome (28688682).

The spelling of 18408201 in words is "eighteen million, four hundred eight thousand, two hundred one".