6404218194 has 32 divisors (see below), whose sum is σ = 13995722304. Its totient is φ = 1937494080.

The previous prime is 6404218181. The next prime is 6404218213. The reversal of 6404218194 is 4918124046.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38689 + ... + 119604.

It is an arithmetic number, because the mean of its divisors is an integer number (437366322).

Almost surely, 2^6404218194 is an apocalyptic number.

6404218194 is an abundant number, since it is smaller than the sum of its proper divisors (7591504110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6404218194 is a wasteful number, since it uses less digits than its factorization.

6404218194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158922.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 6404218194 is about 80026.3593698976. The cubic root of 6404218194 is about 1857.0433422421.

The spelling of 6404218194 in words is "six billion, four hundred four million, two hundred eighteen thousand, one hundred ninety-four".