6915494089 has 4 divisors (see below), whose sum is σ = 7903421824. Its totient is φ = 5927566356.

The previous prime is 6915493993. The next prime is 6915494093. The reversal of 6915494089 is 9804945196.

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 6915494089 - 2²⁷ = 6781276361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6915494099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493963857 + ... + 493963870.

It is an arithmetic number, because the mean of its divisors is an integer number (1975855456).

Almost surely, 2^6915494089 is an apocalyptic number.

It is an amenable number.

6915494089 is a deficient number, since it is larger than the sum of its proper divisors (987927735).

6915494089 is an equidigital number, since it uses as much as digits as its factorization.

6915494089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987927734.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 6915494089 is about 83159.4497877421. The cubic root of 6915494089 is about 1905.2021874896.

The spelling of 6915494089 in words is "six billion, nine hundred fifteen million, four hundred ninety-four thousand, eighty-nine".