4519863649 has 8 divisors (see below), whose sum is σ = 5305168448. Its totient is φ = 3769461360.

The previous prime is 4519863629. The next prime is 4519863679. The reversal of 4519863649 is 9463689154.

It is a happy number.

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

It is not a de Polignac number, because 4519863649 - 2¹⁷ = 4519732577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4519863649.

It is not an unprimeable number, because it can be changed into a prime (4519863619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8725347 + ... + 8725864.

It is an arithmetic number, because the mean of its divisors is an integer number (663146056).

Almost surely, 2^4519863649 is an apocalyptic number.

It is an amenable number.

4519863649 is a deficient number, since it is larger than the sum of its proper divisors (785304799).

4519863649 is a wasteful number, since it uses less digits than its factorization.

4519863649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17451255.

The product of its digits is 5598720, while the sum is 55.

The square root of 4519863649 is about 67229.9311988343. The cubic root of 4519863649 is about 1653.3892560926.

The spelling of 4519863649 in words is "four billion, five hundred nineteen million, eight hundred sixty-three thousand, six hundred forty-nine".