6917889853 has 4 divisors (see below), whose sum is σ = 7906159840. Its totient is φ = 5929619868.

The previous prime is 6917889851. The next prime is 6917889871. The reversal of 6917889853 is 3589887196.

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 6917889853 - 2¹ = 6917889851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6917889851) 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, 494134983 + ... + 494134996.

It is an arithmetic number, because the mean of its divisors is an integer number (1976539960).

Almost surely, 2^6917889853 is an apocalyptic number.

It is an amenable number.

6917889853 is a deficient number, since it is larger than the sum of its proper divisors (988269987).

6917889853 is an equidigital number, since it uses as much as digits as its factorization.

6917889853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988269986.

The product of its digits is 26127360, while the sum is 64.

The square root of 6917889853 is about 83173.8531811530. The cubic root of 6917889853 is about 1905.4221711845.

The spelling of 6917889853 in words is "six billion, nine hundred seventeen million, eight hundred eighty-nine thousand, eight hundred fifty-three".