18663141 has 8 divisors (see below), whose sum is σ = 28439104. Its totient is φ = 10664640.

The previous prime is 18663121. The next prime is 18663157. The reversal of 18663141 is 14136681.

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

It is not a de Polignac number, because 18663141 - 2⁵ = 18663109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18663099 and 18663108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18663121) 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, 444340 + ... + 444381.

It is an arithmetic number, because the mean of its divisors is an integer number (3554888).

Almost surely, 2^18663141 is an apocalyptic number.

It is an amenable number.

18663141 is a deficient number, since it is larger than the sum of its proper divisors (9775963).

18663141 is an equidigital number, since it uses as much as digits as its factorization.

18663141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888731.

The product of its digits is 3456, while the sum is 30.

The square root of 18663141 is about 4320.0857630376. The cubic root of 18663141 is about 265.2537784875.

The spelling of 18663141 in words is "eighteen million, six hundred sixty-three thousand, one hundred forty-one".