6792813981 has 28 divisors (see below), whose sum is σ = 10783673532. Its totient is φ = 4262150016.

The previous prime is 6792813977. The next prime is 6792814009. The reversal of 6792813981 is 1893182976.

It can be written as a sum of positive squares in 2 ways, for example, as 1826793081 + 4966020900 = 42741^2 + 70470^2 .

It is not a de Polignac number, because 6792813981 - 2² = 6792813977 is a prime.

It is a super-2 number, since 2×6792813981² = 92284643560938136722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6792813581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 261666 + ... + 286451.

Almost surely, 2^6792813981 is an apocalyptic number.

It is an amenable number.

6792813981 is a deficient number, since it is larger than the sum of its proper divisors (3990859551).

6792813981 is an equidigital number, since it uses as much as digits as its factorization.

6792813981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548152 (or 548137 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 6792813981 is about 82418.5293547513. The cubic root of 6792813981 is about 1893.8688776272.

The spelling of 6792813981 in words is "six billion, seven hundred ninety-two million, eight hundred thirteen thousand, nine hundred eighty-one".