6443367138 has 24 divisors (see below), whose sum is σ = 15034523868. Its totient is φ = 1982574432.

The previous prime is 6443367137. The next prime is 6443367163. The reversal of 6443367138 is 8317633446.

It can be written as a sum of positive squares in 2 ways, for example, as 5784058809 + 659308329 = 76053^2 + 25677^2 .

It is a super-2 number, since 2×6443367138² = 83033960150116622088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6443367093 and 6443367102.

It is not an unprimeable number, because it can be changed into a prime (6443367137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13767645 + ... + 13768112.

Almost surely, 2^6443367138 is an apocalyptic number.

6443367138 is an abundant number, since it is smaller than the sum of its proper divisors (8591156730).

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

6443367138 is a wasteful number, since it uses less digits than its factorization.

6443367138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27535778 (or 27535775 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 6443367138 is about 80270.5870042072. The cubic root of 6443367138 is about 1860.8196890105.

The spelling of 6443367138 in words is "six billion, four hundred forty-three million, three hundred sixty-seven thousand, one hundred thirty-eight".