6442950919 has 4 divisors (see below), whose sum is σ = 6493682944. Its totient is φ = 6392218896.

The previous prime is 6442950911. The next prime is 6442950929. The reversal of 6442950919 is 9190592446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6442950919 - 2³ = 6442950911 is a prime.

It is a super-2 number, since 2×6442950919² = 83023233089285889122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442950911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25365822 + ... + 25366075.

It is an arithmetic number, because the mean of its divisors is an integer number (1623420736).

Almost surely, 2^6442950919 is an apocalyptic number.

6442950919 is a deficient number, since it is larger than the sum of its proper divisors (50732025).

6442950919 is a wasteful number, since it uses less digits than its factorization.

6442950919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50732024.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 6442950919 is about 80267.9943626350. The cubic root of 6442950919 is about 1860.7796206648.

The spelling of 6442950919 in words is "six billion, four hundred forty-two million, nine hundred fifty thousand, nine hundred nineteen".