18905214 has 8 divisors (see below), whose sum is σ = 37810440. Its totient is φ = 6301736.

The previous prime is 18905197. The next prime is 18905219. The reversal of 18905214 is 41250981.

It is a happy number.

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

18905214 is an admirable number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18905219) 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, 1575429 + ... + 1575440.

It is an arithmetic number, because the mean of its divisors is an integer number (4726305).

Almost surely, 2^18905214 is an apocalyptic number.

18905214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18905214 is a wasteful number, since it uses less digits than its factorization.

18905214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150874.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18905214 is about 4348.0126494756. The cubic root of 18905214 is about 266.3956931461.

The spelling of 18905214 in words is "eighteen million, nine hundred five thousand, two hundred fourteen".