648541379 has 2 divisors, whose sum is σ = 648541380. Its totient is φ = 648541378.

The previous prime is 648541357. The next prime is 648541429. The reversal of 648541379 is 973145846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648541379 - 2²⁴ = 631764163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (648541339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324270689 + 324270690.

It is an arithmetic number, because the mean of its divisors is an integer number (324270690).

Almost surely, 2^648541379 is an apocalyptic number.

648541379 is a deficient number, since it is larger than the sum of its proper divisors (1).

648541379 is an equidigital number, since it uses as much as digits as its factorization.

648541379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 648541379 is about 25466.4755904699. The cubic root of 648541379 is about 865.5906638780.

The spelling of 648541379 in words is "six hundred forty-eight million, five hundred forty-one thousand, three hundred seventy-nine".