18331201 has 8 divisors (see below), whose sum is σ = 21437504. Its totient is φ = 15346800.

The previous prime is 18331193. The next prime is 18331213. The reversal of 18331201 is 10213381.

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

It is not a de Polignac number, because 18331201 - 2³ = 18331193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18331231) 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, 30150 + ... + 30751.

It is an arithmetic number, because the mean of its divisors is an integer number (2679688).

Almost surely, 2^18331201 is an apocalyptic number.

It is an amenable number.

18331201 is a deficient number, since it is larger than the sum of its proper divisors (3106303).

18331201 is an equidigital number, since it uses as much as digits as its factorization.

18331201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60951.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 18331201 is about 4281.4951827603. The cubic root of 18331201 is about 263.6717731814.

Adding to 18331201 its reverse (10213381), we get a palindrome (28544582).

The spelling of 18331201 in words is "eighteen million, three hundred thirty-one thousand, two hundred one".