648418365929 has 2 divisors, whose sum is σ = 648418365930. Its totient is φ = 648418365928.

The previous prime is 648418365871. The next prime is 648418366027. The reversal of 648418365929 is 929563814846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645965838400 + 2452527529 = 803720^2 + 49523^2 .

It is a cyclic number.

It is not a de Polignac number, because 648418365929 - 2²⁸ = 648149930473 is a prime.

It is not a weakly prime, because it can be changed into another prime (648418385929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324209182964 + 324209182965.

It is an arithmetic number, because the mean of its divisors is an integer number (324209182965).

Almost surely, 2^648418365929 is an apocalyptic number.

It is an amenable number.

648418365929 is a deficient number, since it is larger than the sum of its proper divisors (1).

648418365929 is an equidigital number, since it uses as much as digits as its factorization.

648418365929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89579520, while the sum is 65.

The spelling of 648418365929 in words is "six hundred forty-eight billion, four hundred eighteen million, three hundred sixty-five thousand, nine hundred twenty-nine".