4018191 has 8 divisors (see below), whose sum is σ = 5437824. Its totient is φ = 2638680.

The previous prime is 4018181. The next prime is 4018207. The reversal of 4018191 is 1918104.

4018191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 4018191 - 2⁵ = 4018159 is a prime.

It is a super-2 number, since 2×4018191² = 32291717824962, which contains 22 as substring.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4018151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9795 + ... + 10196.

It is an arithmetic number, because the mean of its divisors is an integer number (679728).

Almost surely, 2^4018191 is an apocalyptic number.

4018191 is a deficient number, since it is larger than the sum of its proper divisors (1419633).

4018191 is a wasteful number, since it uses less digits than its factorization.

4018191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 4018191 is about 2004.5425912163. The cubic root of 4018191 is about 158.9803781015.

The spelling of 4018191 in words is "four million, eighteen thousand, one hundred ninety-one".