18930214 has 32 divisors (see below), whose sum is σ = 31648320. Its totient is φ = 8451072.

The previous prime is 18930203. The next prime is 18930253. The reversal of 18930214 is 41203981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71847 + ... + 72109.

It is an arithmetic number, because the mean of its divisors is an integer number (989010).

Almost surely, 2^18930214 is an apocalyptic number.

18930214 is a deficient number, since it is larger than the sum of its proper divisors (12718106).

18930214 is a wasteful number, since it uses less digits than its factorization.

18930214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18930214 is about 4350.8865763198. The cubic root of 18930214 is about 266.5130674471.

It can be divided in two parts, 189 and 30214, that added together give a palindrome (30403).

The spelling of 18930214 in words is "eighteen million, nine hundred thirty thousand, two hundred fourteen".