6442020185 has 8 divisors (see below), whose sum is σ = 7845804096. Its totient is φ = 5076696240.

The previous prime is 6442020121. The next prime is 6442020253. The reversal of 6442020185 is 5810202446.

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

It is not a de Polignac number, because 6442020185 - 2⁶ = 6442020121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9614621 + ... + 9615290.

It is an arithmetic number, because the mean of its divisors is an integer number (980725512).

Almost surely, 2^6442020185 is an apocalyptic number.

It is an amenable number.

6442020185 is a deficient number, since it is larger than the sum of its proper divisors (1403783911).

6442020185 is a wasteful number, since it uses less digits than its factorization.

6442020185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19229983.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 6442020185 is about 80262.1964875121. The cubic root of 6442020185 is about 1860.6900150227.

The spelling of 6442020185 in words is "six billion, four hundred forty-two million, twenty thousand, one hundred eighty-five".