6534043838 has 32 divisors (see below), whose sum is σ = 11420533440. Its totient is φ = 2745550080.

The previous prime is 6534043793. The next prime is 6534043889. The reversal of 6534043838 is 8383404356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1681658 + ... + 1685538.

It is an arithmetic number, because the mean of its divisors is an integer number (356891670).

Almost surely, 2^6534043838 is an apocalyptic number.

6534043838 is a deficient number, since it is larger than the sum of its proper divisors (4886489602).

6534043838 is a wasteful number, since it uses less digits than its factorization.

6534043838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6212.

The product of its (nonzero) digits is 829440, while the sum is 44.

The square root of 6534043838 is about 80833.4326748530. The cubic root of 6534043838 is about 1869.5080862684.

The spelling of 6534043838 in words is "six billion, five hundred thirty-four million, forty-three thousand, eight hundred thirty-eight".