6809437631 has 2 divisors, whose sum is σ = 6809437632. Its totient is φ = 6809437630.

The previous prime is 6809437573. The next prime is 6809437651. The reversal of 6809437631 is 1367349086.

It is a happy number.

6809437631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6809437631 - 2¹⁸ = 6809175487 is a prime.

It is a super-2 number, since 2×6809437631² = 92736881700957784322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6809437651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3404718815 + 3404718816.

It is an arithmetic number, because the mean of its divisors is an integer number (3404718816).

Almost surely, 2^6809437631 is an apocalyptic number.

6809437631 is a deficient number, since it is larger than the sum of its proper divisors (1).

6809437631 is an equidigital number, since it uses as much as digits as its factorization.

6809437631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 6809437631 is about 82519.3167143306. The cubic root of 6809437631 is about 1895.4125366638.

The spelling of 6809437631 in words is "six billion, eight hundred nine million, four hundred thirty-seven thousand, six hundred thirty-one".