538116563 has 4 divisors (see below), whose sum is σ = 546938208. Its totient is φ = 529294920.

The previous prime is 538116559. The next prime is 538116619. The reversal of 538116563 is 365611835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365611835 = 5 ⋅73122367.

It is a cyclic number.

It is not a de Polignac number, because 538116563 - 2² = 538116559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538116503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4410731 + ... + 4410852.

It is an arithmetic number, because the mean of its divisors is an integer number (136734552).

Almost surely, 2^538116563 is an apocalyptic number.

538116563 is a deficient number, since it is larger than the sum of its proper divisors (8821645).

538116563 is an equidigital number, since it uses as much as digits as its factorization.

538116563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8821644.

The product of its digits is 64800, while the sum is 38.

The square root of 538116563 is about 23197.3395672866. The cubic root of 538116563 is about 813.3774349948.

The spelling of 538116563 in words is "five hundred thirty-eight million, one hundred sixteen thousand, five hundred sixty-three".