4519219889 has 4 divisors (see below), whose sum is σ = 4522512756. Its totient is φ = 4515927024.

The previous prime is 4519219829. The next prime is 4519219909. The reversal of 4519219889 is 9889129154.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4426906225 + 92313664 = 66535^2 + 9608^2 .

It is a cyclic number.

It is not a de Polignac number, because 4519219889 - 2¹² = 4519215793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4519219829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644374 + ... + 1647119.

It is an arithmetic number, because the mean of its divisors is an integer number (1130628189).

Almost surely, 2^4519219889 is an apocalyptic number.

It is an amenable number.

4519219889 is a deficient number, since it is larger than the sum of its proper divisors (3292867).

4519219889 is a wasteful number, since it uses less digits than its factorization.

4519219889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292866.

The product of its digits is 1866240, while the sum is 56.

The square root of 4519219889 is about 67225.1432798771. The cubic root of 4519219889 is about 1653.3107554646.

The spelling of 4519219889 in words is "four billion, five hundred nineteen million, two hundred nineteen thousand, eight hundred eighty-nine".