18663514 has 8 divisors (see below), whose sum is σ = 28091700. Its totient is φ = 9299616.

The previous prime is 18663509. The next prime is 18663523. The reversal of 18663514 is 41536681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17264025 + 1399489 = 4155^2 + 1183^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18663514.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15339 + ... + 16510.

Almost surely, 2^18663514 is an apocalyptic number.

18663514 is a deficient number, since it is larger than the sum of its proper divisors (9428186).

18663514 is a wasteful number, since it uses less digits than its factorization.

18663514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32144.

The product of its digits is 17280, while the sum is 34.

The square root of 18663514 is about 4320.1289332611. The cubic root of 18663514 is about 265.2555455891.

The spelling of 18663514 in words is "eighteen million, six hundred sixty-three thousand, five hundred fourteen".