648349379 has 2 divisors, whose sum is σ = 648349380. Its totient is φ = 648349378.

The previous prime is 648349367. The next prime is 648349381. The reversal of 648349379 is 973943846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648349379 - 2¹⁶ = 648283843 is a prime.

Together with 648349381, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648349379.

It is not a weakly prime, because it can be changed into another prime (648349279) 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, 324174689 + 324174690.

It is an arithmetic number, because the mean of its divisors is an integer number (324174690).

Almost surely, 2^648349379 is an apocalyptic number.

648349379 is a deficient number, since it is larger than the sum of its proper divisors (1).

648349379 is an equidigital number, since it uses as much as digits as its factorization.

648349379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 53.

The square root of 648349379 is about 25462.7056496359. The cubic root of 648349379 is about 865.5052363756.

The spelling of 648349379 in words is "six hundred forty-eight million, three hundred forty-nine thousand, three hundred seventy-nine".