18909614 has 8 divisors (see below), whose sum is σ = 28466208. Its totient is φ = 9420880.

The previous prime is 18909601. The next prime is 18909619. The reversal of 18909614 is 41690981.

It is a happy number.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18909619) 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, 16262 + ... + 17385.

It is an arithmetic number, because the mean of its divisors is an integer number (3558276).

Almost surely, 2^18909614 is an apocalyptic number.

18909614 is a deficient number, since it is larger than the sum of its proper divisors (9556594).

18909614 is a wasteful number, since it uses less digits than its factorization.

18909614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33930.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 18909614 is about 4348.5185983275. The cubic root of 18909614 is about 266.4163585232.

The spelling of 18909614 in words is "eighteen million, nine hundred nine thousand, six hundred fourteen".