6444004819 has 16 divisors (see below), whose sum is σ = 7814916288. Its totient is φ = 5187105792.

The previous prime is 6444004807. The next prime is 6444004823. The reversal of 6444004819 is 9184004446.

It is a cyclic number.

It is not a de Polignac number, because 6444004819 - 2¹¹ = 6444002771 is a prime.

It is a super-2 number, since 2×6444004819² = 83050396214590445522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6444004219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4864 + ... + 113629.

It is an arithmetic number, because the mean of its divisors is an integer number (488432268).

Almost surely, 2^6444004819 is an apocalyptic number.

6444004819 is a deficient number, since it is larger than the sum of its proper divisors (1370911469).

6444004819 is a wasteful number, since it uses less digits than its factorization.

6444004819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118974.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 6444004819 is about 80274.5589772999. The cubic root of 6444004819 is about 1860.8810735937.

The spelling of 6444004819 in words is "six billion, four hundred forty-four million, four thousand, eight hundred nineteen".