18968630 has 16 divisors (see below), whose sum is σ = 34337520. Its totient is φ = 7544352.

The previous prime is 18968627. The next prime is 18968657. The reversal of 18968630 is 3686981.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3509 + ... + 7088.

It is an arithmetic number, because the mean of its divisors is an integer number (2146095).

Almost surely, 2^18968630 is an apocalyptic number.

18968630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18968630 is a deficient number, since it is larger than the sum of its proper divisors (15368890).

18968630 is a wasteful number, since it uses less digits than its factorization.

18968630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10783.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18968630 is about 4355.2990712464. The cubic root of 18968630 is about 266.6932282570.

The spelling of 18968630 in words is "eighteen million, nine hundred sixty-eight thousand, six hundred thirty".