6444445774 has 16 divisors (see below), whose sum is σ = 10411788240. Its totient is φ = 2973922560.

The previous prime is 6444445753. The next prime is 6444445781. The reversal of 6444445774 is 4775444446.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 221854 + ... + 249214.

It is an arithmetic number, because the mean of its divisors is an integer number (650736765).

Almost surely, 2^6444445774 is an apocalyptic number.

6444445774 is a deficient number, since it is larger than the sum of its proper divisors (3967342466).

6444445774 is a wasteful number, since it uses less digits than its factorization.

6444445774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36435.

The product of its digits is 6021120, while the sum is 49.

The square root of 6444445774 is about 80277.3054729666. The cubic root of 6444445774 is about 1860.9235185287.

The spelling of 6444445774 in words is "six billion, four hundred forty-four million, four hundred forty-five thousand, seven hundred seventy-four".