6131564609 has 2 divisors, whose sum is σ = 6131564610. Its totient is φ = 6131564608.

The previous prime is 6131564591. The next prime is 6131564611. The reversal of 6131564609 is 9064651316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5878595584 + 252969025 = 76672^2 + 15905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6131564609 is a prime.

Together with 6131564611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6131564639) 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 as a sum of consecutive naturals, namely, 3065782304 + 3065782305.

It is an arithmetic number, because the mean of its divisors is an integer number (3065782305).

Almost surely, 2^6131564609 is an apocalyptic number.

It is an amenable number.

6131564609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6131564609 is an equidigital number, since it uses as much as digits as its factorization.

6131564609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 6131564609 is about 78304.3077295241. The cubic root of 6131564609 is about 1830.3062790739.

The spelling of 6131564609 in words is "six billion, one hundred thirty-one million, five hundred sixty-four thousand, six hundred nine".