6381418 has 8 divisors (see below), whose sum is σ = 9589860. Its totient is φ = 3184800.

The previous prime is 6381407. The next prime is 6381437. The reversal of 6381418 is 8141836.

It can be written as a sum of positive squares in 2 ways, for example, as 6185169 + 196249 = 2487^2 + 443^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 6381418.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1453 + ... + 3856.

Almost surely, 2^6381418 is an apocalyptic number.

6381418 is a deficient number, since it is larger than the sum of its proper divisors (3208442).

6381418 is a wasteful number, since it uses less digits than its factorization.

6381418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912.

The product of its digits is 4608, while the sum is 31.

The square root of 6381418 is about 2526.1468682561. The cubic root of 6381418 is about 185.4836916519.

The spelling of 6381418 in words is "six million, three hundred eighty-one thousand, four hundred eighteen".