6418 has 4 divisors (see below), whose sum is σ = 9630. Its totient is φ = 3208.

The previous prime is 6397. The next prime is 6421. The reversal of 6418 is 8146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8146 = 2 ⋅4073.

It can be written as a sum of positive squares in only one way, i.e., 5329 + 1089 = 73^2 + 33^2 .

It is an Ulam number.

It is a plaindrome in base 7.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 6395 and 6404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1603 + ... + 1606.

2⁶⁴¹⁸ is an apocalyptic number.

6418 is a deficient number, since it is larger than the sum of its proper divisors (3212).

6418 is a wasteful number, since it uses less digits than its factorization.

6418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211.

The product of its digits is 192, while the sum is 19.

The square root of 6418 is about 80.1124210095. The cubic root of 6418 is about 18.5837449999.

Subtracting from 6418 its product of digits (192), we obtain a palindrome (6226).

Subtracting 6418 from its reverse (8146), we obtain a cube (1728 = 12³).

It can be divided in two parts, 6 and 418, that added together give a palindrome (424).

The spelling of 6418 in words is "six thousand, four hundred eighteen".