6415404218 has 8 divisors (see below), whose sum is σ = 9638806548. Its totient is φ = 3202468704.

The previous prime is 6415404217. The next prime is 6415404253. The reversal of 6415404218 is 8124045146.

It can be written as a sum of positive squares in 2 ways, for example, as 3428453809 + 2986950409 = 58553^2 + 54653^2 .

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

It is a super-2 number, since 2×6415404218² = 82314822560664383048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6415404217) 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 in 3 ways as a sum of consecutive naturals, for example, 2615171 + ... + 2617622.

Almost surely, 2^6415404218 is an apocalyptic number.

6415404218 is a deficient number, since it is larger than the sum of its proper divisors (3223402330).

6415404218 is a wasteful number, since it uses less digits than its factorization.

6415404218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5233408.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 6415404218 is about 80096.2185000016. The cubic root of 6415404218 is about 1858.1239242397.

The spelling of 6415404218 in words is "six billion, four hundred fifteen million, four hundred four thousand, two hundred eighteen".