6443386105 has 12 divisors (see below), whose sum is σ = 8372590380. Its totient is φ = 4758192192.

The previous prime is 6443386097. The next prime is 6443386109. The reversal of 6443386105 is 5016833446.

It can be written as a sum of positive squares in 6 ways, for example, as 3247632144 + 3195753961 = 56988^2 + 56531^2 .

It is not a de Polignac number, because 6443386105 - 2³ = 6443386097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6443386109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3811810 + ... + 3813499.

It is an arithmetic number, because the mean of its divisors is an integer number (697715865).

Almost surely, 2^6443386105 is an apocalyptic number.

6443386105 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6443386105 is a deficient number, since it is larger than the sum of its proper divisors (1929204275).

6443386105 is a wasteful number, since it uses less digits than its factorization.

6443386105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625340 (or 7625327 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 6443386105 is about 80270.7051482669. The cubic root of 6443386105 is about 1860.8215148743.

The spelling of 6443386105 in words is "six billion, four hundred forty-three million, three hundred eighty-six thousand, one hundred five".