5663947919 has 12 divisors (see below), whose sum is σ = 6854846544. Its totient is φ = 4568572992.

The previous prime is 5663947889. The next prime is 5663947943. The reversal of 5663947919 is 9197493665.

It is a de Polignac number, because none of the positive numbers 2^k-5663947919 is a prime.

It is a super-2 number, since 2×5663947919² = 64160612058288861122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5663947019) 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, 817532 + ... + 824430.

It is an arithmetic number, because the mean of its divisors is an integer number (571237212).

Almost surely, 2^5663947919 is an apocalyptic number.

5663947919 is a deficient number, since it is larger than the sum of its proper divisors (1190898625).

5663947919 is an frugal number, since it uses more digits than its factorization.

5663947919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13822 (or 6923 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 59.

The square root of 5663947919 is about 75259.2048788718. The cubic root of 5663947919 is about 1782.5419138047.

The spelling of 5663947919 in words is "five billion, six hundred sixty-three million, nine hundred forty-seven thousand, nine hundred nineteen".