6731105989 has 2 divisors, whose sum is σ = 6731105990. Its totient is φ = 6731105988.

The previous prime is 6731105959. The next prime is 6731106071. The reversal of 6731105989 is 9895011376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6730889764 + 216225 = 82042^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 6731105989 - 2¹¹ = 6731103941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6731105959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3365552994 + 3365552995.

It is an arithmetic number, because the mean of its divisors is an integer number (3365552995).

Almost surely, 2^6731105989 is an apocalyptic number.

It is an amenable number.

6731105989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6731105989 is an equidigital number, since it uses as much as digits as its factorization.

6731105989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 6731105989 is about 82043.3177595836. The cubic root of 6731105989 is about 1888.1165964939.

The spelling of 6731105989 in words is "six billion, seven hundred thirty-one million, one hundred five thousand, nine hundred eighty-nine".