18227938 has 8 divisors (see below), whose sum is σ = 28224000. Its totient is φ = 8819940.

The previous prime is 18227933. The next prime is 18227941. The reversal of 18227938 is 83972281.

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 18227938.

It is not an unprimeable number, because it can be changed into a prime (18227933) 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, 146938 + ... + 147061.

It is an arithmetic number, because the mean of its divisors is an integer number (3528000).

Almost surely, 2^18227938 is an apocalyptic number.

18227938 is a deficient number, since it is larger than the sum of its proper divisors (9996062).

18227938 is a wasteful number, since it uses less digits than its factorization.

18227938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294032.

The product of its digits is 48384, while the sum is 40.

The square root of 18227938 is about 4269.4189300185. The cubic root of 18227938 is about 263.1757368548.

The spelling of 18227938 in words is "eighteen million, two hundred twenty-seven thousand, nine hundred thirty-eight".