18919714 has 8 divisors (see below), whose sum is σ = 30959568. Its totient is φ = 8599860.

The previous prime is 18919711. The next prime is 18919717. The reversal of 18919714 is 41791981.

It is an interprime number because it is at equal distance from previous prime (18919711) and next prime (18919717).

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

It is not an unprimeable number, because it can be changed into a prime (18919711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429972 + ... + 430015.

It is an arithmetic number, because the mean of its divisors is an integer number (3869946).

Almost surely, 2^18919714 is an apocalyptic number.

18919714 is a deficient number, since it is larger than the sum of its proper divisors (12039854).

18919714 is a wasteful number, since it uses less digits than its factorization.

18919714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860000.

The product of its digits is 18144, while the sum is 40.

The square root of 18919714 is about 4349.6797583270. The cubic root of 18919714 is about 266.4637828350.

The spelling of 18919714 in words is "eighteen million, nine hundred nineteen thousand, seven hundred fourteen".