6418993423 has 2 divisors, whose sum is σ = 6418993424. Its totient is φ = 6418993422.

The previous prime is 6418993411. The next prime is 6418993499. The reversal of 6418993423 is 3243998146.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6418993423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6418993403) 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 as a sum of consecutive naturals, namely, 3209496711 + 3209496712.

It is an arithmetic number, because the mean of its divisors is an integer number (3209496712).

Almost surely, 2^6418993423 is an apocalyptic number.

6418993423 is a deficient number, since it is larger than the sum of its proper divisors (1).

6418993423 is an equidigital number, since it uses as much as digits as its factorization.

6418993423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The square root of 6418993423 is about 80118.6209504382. The cubic root of 6418993423 is about 1858.4703791218.

The spelling of 6418993423 in words is "six billion, four hundred eighteen million, nine hundred ninety-three thousand, four hundred twenty-three".