4463991819 has 12 divisors (see below), whose sum is σ = 7369129456. Its totient is φ = 2550852432.

The previous prime is 4463991817. The next prime is 4463991821. The reversal of 4463991819 is 9181993644.

It is a happy number.

4463991819 is a `hidden beast` number, since 446 + 39 + 91 + 81 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (4463991817) and next prime (4463991821).

It is not a de Polignac number, because 4463991819 - 2¹ = 4463991817 is a prime.

It is a super-2 number, since 2×4463991819² = 39854445920197857522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4463991817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35428444 + ... + 35428569.

Almost surely, 2^4463991819 is an apocalyptic number.

4463991819 is a deficient number, since it is larger than the sum of its proper divisors (2905137637).

4463991819 is a wasteful number, since it uses less digits than its factorization.

4463991819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70857026 (or 70857023 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 4463991819 is about 66813.1111309749. Note that the first 4 decimals coincide. The cubic root of 4463991819 is about 1646.5482562815.

The spelling of 4463991819 in words is "four billion, four hundred sixty-three million, nine hundred ninety-one thousand, eight hundred nineteen".