4148191 has 4 divisors (see below), whose sum is σ = 4152384. Its totient is φ = 4144000.

The previous prime is 4148161. The next prime is 4148219. The reversal of 4148191 is 1918414.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1918414 = 2 ⋅959207.

It is a cyclic number.

It is not a de Polignac number, because 4148191 - 2⁵ = 4148159 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4148101) 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 3 ways as a sum of consecutive naturals, for example, 306 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (1038096).

Almost surely, 2^4148191 is an apocalyptic number.

4148191 is a deficient number, since it is larger than the sum of its proper divisors (4193).

4148191 is a wasteful number, since it uses less digits than its factorization.

4148191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192.

The product of its digits is 1152, while the sum is 28.

The square root of 4148191 is about 2036.7108287629. The cubic root of 4148191 is about 160.6767042238.

The spelling of 4148191 in words is "four million, one hundred forty-eight thousand, one hundred ninety-one".