18032641 has 8 divisors (see below), whose sum is σ = 19867968. Its totient is φ = 16230000.

The previous prime is 18032587. The next prime is 18032647. The reversal of 18032641 is 14623081.

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 18032641 - 2⁷ = 18032513 is a prime.

It is a super-2 number, since 2×18032641² = 650352282869762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18032647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7005 + ... + 9226.

It is an arithmetic number, because the mean of its divisors is an integer number (2483496).

Almost surely, 2^18032641 is an apocalyptic number.

18032641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18032641 is a deficient number, since it is larger than the sum of its proper divisors (1835327).

18032641 is a wasteful number, since it uses less digits than its factorization.

18032641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16343.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18032641 is about 4246.4857235130. The cubic root of 18032641 is about 262.2324578726.

It can be divided in two parts, 1803 and 2641, that added together give a palindrome (4444).

The spelling of 18032641 in words is "eighteen million, thirty-two thousand, six hundred forty-one".