6438358404 has 36 divisors (see below), whose sum is σ = 16312364796. Its totient is φ = 2141157888.

The previous prime is 6438358397. The next prime is 6438358427. The reversal of 6438358404 is 4048538346.

6438358404 is a `hidden beast` number, since 64 + 3 + 8 + 3 + 584 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1387413504 + 5050944900 = 37248^2 + 71070^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6438358404.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 190929 + ... + 222104.

Almost surely, 2^6438358404 is an apocalyptic number.

It is an amenable number.

6438358404 is an abundant number, since it is smaller than the sum of its proper divisors (9874006392).

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

6438358404 is a wasteful number, since it uses less digits than its factorization.

6438358404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413476 (or 413471 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 6438358404 is about 80239.3818769811. The cubic root of 6438358404 is about 1860.3373963035.

The spelling of 6438358404 in words is "six billion, four hundred thirty-eight million, three hundred fifty-eight thousand, four hundred four".