18910214 has 8 divisors (see below), whose sum is σ = 28788888. Its totient is φ = 9313920.

The previous prime is 18910207. The next prime is 18910223. The reversal of 18910214 is 41201981.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70427 + ... + 70694.

It is an arithmetic number, because the mean of its divisors is an integer number (3598611).

Almost surely, 2^18910214 is an apocalyptic number.

18910214 is a deficient number, since it is larger than the sum of its proper divisors (9878674).

18910214 is a wasteful number, since it uses less digits than its factorization.

18910214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141190.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 18910214 is about 4348.5875867918. The cubic root of 18910214 is about 266.4191762807.

The spelling of 18910214 in words is "eighteen million, nine hundred ten thousand, two hundred fourteen".