6438476845 has 8 divisors (see below), whose sum is σ = 7764998400. Its totient is φ = 5124897360.

The previous prime is 6438476801. The next prime is 6438476851. The reversal of 6438476845 is 5486748346.

It is a happy number.

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

It is not a de Polignac number, because 6438476845 - 2⁷ = 6438476717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3234421 + ... + 3236410.

It is an arithmetic number, because the mean of its divisors is an integer number (970624800).

Almost surely, 2^6438476845 is an apocalyptic number.

It is an amenable number.

6438476845 is a deficient number, since it is larger than the sum of its proper divisors (1326521555).

6438476845 is a wasteful number, since it uses less digits than its factorization.

6438476845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471035.

The product of its digits is 15482880, while the sum is 55.

The square root of 6438476845 is about 80240.1199213959. The cubic root of 6438476845 is about 1860.3488039149.

The spelling of 6438476845 in words is "six billion, four hundred thirty-eight million, four hundred seventy-six thousand, eight hundred forty-five".