18214394 has 8 divisors (see below), whose sum is σ = 29805408. Its totient is φ = 8279260.

The previous prime is 18214393. The next prime is 18214439. The reversal of 18214394 is 49341281.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18214394.

It is not an unprimeable number, because it can be changed into a prime (18214393) 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, 413942 + ... + 413985.

It is an arithmetic number, because the mean of its divisors is an integer number (3725676).

Almost surely, 2^18214394 is an apocalyptic number.

18214394 is a deficient number, since it is larger than the sum of its proper divisors (11591014).

18214394 is a wasteful number, since it uses less digits than its factorization.

18214394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827940.

The product of its digits is 6912, while the sum is 32.

The square root of 18214394 is about 4267.8324709388. The cubic root of 18214394 is about 263.1105377562.

It can be divided in two parts, 18 and 214394, that added together give a palindrome (214412).

The spelling of 18214394 in words is "eighteen million, two hundred fourteen thousand, three hundred ninety-four".