649583219 has 2 divisors, whose sum is σ = 649583220. Its totient is φ = 649583218.

The previous prime is 649583173. The next prime is 649583237. The reversal of 649583219 is 912385946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649583219 - 2¹² = 649579123 is a prime.

It is a super-2 number, since 2×649583219² = 843916716812803922, which contains 22 as substring.

It is equal to p_33772898 and since 649583219 and 33772898 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (649583239) 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, 324791609 + 324791610.

It is an arithmetic number, because the mean of its divisors is an integer number (324791610).

Almost surely, 2^649583219 is an apocalyptic number.

649583219 is a deficient number, since it is larger than the sum of its proper divisors (1).

649583219 is an equidigital number, since it uses as much as digits as its factorization.

649583219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 649583219 is about 25486.9225093969. The cubic root of 649583219 is about 866.0539211395.

The spelling of 649583219 in words is "six hundred forty-nine million, five hundred eighty-three thousand, two hundred nineteen".