648418365949 has 8 divisors (see below), whose sum is σ = 650190566592. Its totient is φ = 646647555840.

The previous prime is 648418365929. The next prime is 648418366027. The reversal of 648418365949 is 949563814846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648418365949 - 2⁹ = 648418365437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648418365929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589704 + ... + 1282414.

It is an arithmetic number, because the mean of its divisors is an integer number (81273820824).

Almost surely, 2^648418365949 is an apocalyptic number.

It is an amenable number.

648418365949 is a deficient number, since it is larger than the sum of its proper divisors (1772200643).

648418365949 is a wasteful number, since it uses less digits than its factorization.

648418365949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695267.

The product of its digits is 179159040, while the sum is 67.

The spelling of 648418365949 in words is "six hundred forty-eight billion, four hundred eighteen million, three hundred sixty-five thousand, nine hundred forty-nine".