18489201 has 8 divisors (see below), whose sum is σ = 24724704. Its totient is φ = 12289920.

The previous prime is 18489199. The next prime is 18489203. The reversal of 18489201 is 10298481.

It is an interprime number because it is at equal distance from previous prime (18489199) and next prime (18489203).

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

It is not a de Polignac number, because 18489201 - 2¹ = 18489199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18489203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7840 + ... + 9921.

It is an arithmetic number, because the mean of its divisors is an integer number (3090588).

Almost surely, 2^18489201 is an apocalyptic number.

18489201 is the 2720-th centered pentagonal number.

It is an amenable number.

18489201 is a deficient number, since it is larger than the sum of its proper divisors (6235503).

18489201 is a wasteful number, since it uses less digits than its factorization.

18489201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18111.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 18489201 is about 4299.9070920195. The cubic root of 18489201 is about 264.4271522731.

The spelling of 18489201 in words is "eighteen million, four hundred eighty-nine thousand, two hundred one".