14201818 has 4 divisors (see below), whose sum is σ = 21302730. Its totient is φ = 7100908.

The previous prime is 14201809. The next prime is 14201839. The reversal of 14201818 is 81810241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81810241 = 23 ⋅3556967.

It can be written as a sum of positive squares in only one way, i.e., 8427409 + 5774409 = 2903^2 + 2403^2 .

14201818 is a modest number, since divided by 1818 gives 1420 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 14201792 and 14201801.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3550453 + ... + 3550456.

Almost surely, 2^14201818 is an apocalyptic number.

14201818 is a deficient number, since it is larger than the sum of its proper divisors (7100912).

14201818 is an equidigital number, since it uses as much as digits as its factorization.

14201818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100911.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 14201818 is about 3768.5299521166. The cubic root of 14201818 is about 242.1668248434.

The spelling of 14201818 in words is "fourteen million, two hundred one thousand, eight hundred eighteen".