4018421191 has 2 divisors, whose sum is σ = 4018421192. Its totient is φ = 4018421190.

The previous prime is 4018421167. The next prime is 4018421237. The reversal of 4018421191 is 1911248104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4018421191 is a prime.

It is a super-2 number, since 2×4018421191² = 32295417736555716962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4018421101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2009210595 + 2009210596.

It is an arithmetic number, because the mean of its divisors is an integer number (2009210596).

Almost surely, 2^4018421191 is an apocalyptic number.

4018421191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4018421191 is an equidigital number, since it uses as much as digits as its factorization.

4018421191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 4018421191 is about 63391.0182202495. The cubic root of 4018421191 is about 1589.8341389162.

Adding to 4018421191 its reverse (1911248104), we get a palindrome (5929669295).

The spelling of 4018421191 in words is "four billion, eighteen million, four hundred twenty-one thousand, one hundred ninety-one".