1648512180949 has 2 divisors, whose sum is σ = 1648512180950. Its totient is φ = 1648512180948.

The previous prime is 1648512180941. The next prime is 1648512181007. The reversal of 1648512180949 is 9490812158461.

It is an a-pointer prime, because the next prime (1648512181007) can be obtained adding 1648512180949 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1633301892049 + 15210288900 = 1278007^2 + 123330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648512180949 - 2³ = 1648512180941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1648512180893 and 1648512180902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648512180941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824256090474 + 824256090475.

It is an arithmetic number, because the mean of its divisors is an integer number (824256090475).

Almost surely, 2^{1648512180949} is an apocalyptic number.

It is an amenable number.

1648512180949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648512180949 is an equidigital number, since it uses as much as digits as its factorization.

1648512180949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 58.

The spelling of 1648512180949 in words is "one trillion, six hundred forty-eight billion, five hundred twelve million, one hundred eighty thousand, nine hundred forty-nine".