4194018 has 20 divisors (see below), whose sum is σ = 9398070. Its totient is φ = 1397952.

The previous prime is 4194011. The next prime is 4194023. The reversal of 4194018 is 8104914.

It can be written as a sum of positive squares in only one way, i.e., 2537649 + 1656369 = 1593^2 + 1287^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4193982 and 4194000.

It is not an unprimeable number, because it can be changed into a prime (4194011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12783 + ... + 13106.

Almost surely, 2^4194018 is an apocalyptic number.

4194018 is an abundant number, since it is smaller than the sum of its proper divisors (5204052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4194018 is a wasteful number, since it uses less digits than its factorization.

4194018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25903 (or 25894 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 4194018 is about 2047.9301745909. The cubic root of 4194018 is about 161.2662287614.

The spelling of 4194018 in words is "four million, one hundred ninety-four thousand, eighteen".