18963168 has 48 divisors (see below), whose sum is σ = 56891520. Its totient is φ = 5417856.

The previous prime is 18963163. The next prime is 18963169. The reversal of 18963168 is 86136981.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18963163) 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, 13438 + ... + 14781.

It is an arithmetic number, because the mean of its divisors is an integer number (1185240).

Almost surely, 2^18963168 is an apocalyptic number.

It is an amenable number.

18963168 is an abundant number, since it is smaller than the sum of its proper divisors (37928352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18963168 is a wasteful number, since it uses less digits than its factorization.

18963168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28239 (or 28231 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 18963168 is about 4354.6719738690. The cubic root of 18963168 is about 266.6676277743.

The spelling of 18963168 in words is "eighteen million, nine hundred sixty-three thousand, one hundred sixty-eight".