9138819563 has 4 divisors (see below), whose sum is σ = 9536159568. Its totient is φ = 8741479560.

The previous prime is 9138819539. The next prime is 9138819577. The reversal of 9138819563 is 3659188319.

9138819563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9138819563 - 2²² = 9134625259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9138519563) 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, 198669968 + ... + 198670013.

It is an arithmetic number, because the mean of its divisors is an integer number (2384039892).

Almost surely, 2^9138819563 is an apocalyptic number.

9138819563 is a deficient number, since it is larger than the sum of its proper divisors (397340005).

9138819563 is a wasteful number, since it uses less digits than its factorization.

9138819563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397340004.

The product of its digits is 1399680, while the sum is 53.

The square root of 9138819563 is about 95597.1734048659. The cubic root of 9138819563 is about 2090.7239819144.

The spelling of 9138819563 in words is "nine billion, one hundred thirty-eight million, eight hundred nineteen thousand, five hundred sixty-three".