649586131 has 2 divisors, whose sum is σ = 649586132. Its totient is φ = 649586130.

The previous prime is 649586129. The next prime is 649586153. The reversal of 649586131 is 131685946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 649586131 - 2¹ = 649586129 is a prime.

It is a super-2 number, since 2×649586131² = 843924283175098322, which contains 22 as substring.

Together with 649586129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (649586101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324793065 + 324793066.

It is an arithmetic number, because the mean of its divisors is an integer number (324793066).

Almost surely, 2^649586131 is an apocalyptic number.

649586131 is a deficient number, since it is larger than the sum of its proper divisors (1).

649586131 is an equidigital number, since it uses as much as digits as its factorization.

649586131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 649586131 is about 25486.9796366694. The cubic root of 649586131 is about 866.0552152745.

The spelling of 649586131 in words is "six hundred forty-nine million, five hundred eighty-six thousand, one hundred thirty-one".