6538912917 has 4 divisors (see below), whose sum is σ = 8718550560. Its totient is φ = 4359275276.

The previous prime is 6538912907. The next prime is 6538912951. The reversal of 6538912917 is 7192198356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6538912917 - 2⁸ = 6538912661 is a prime.

It is a super-3 number, since 3×6538912917³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6538912917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538912907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089818817 + ... + 1089818822.

It is an arithmetic number, because the mean of its divisors is an integer number (2179637640).

Almost surely, 2^6538912917 is an apocalyptic number.

It is an amenable number.

6538912917 is a deficient number, since it is larger than the sum of its proper divisors (2179637643).

6538912917 is a wasteful number, since it uses less digits than its factorization.

6538912917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179637642.

The product of its digits is 816480, while the sum is 51.

The square root of 6538912917 is about 80863.5450434867. The cubic root of 6538912917 is about 1869.9723481475.

The spelling of 6538912917 in words is "six billion, five hundred thirty-eight million, nine hundred twelve thousand, nine hundred seventeen".