1648845293 has 2 divisors, whose sum is σ = 1648845294. Its totient is φ = 1648845292.

The previous prime is 1648845287. The next prime is 1648845307. The reversal of 1648845293 is 3925488461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1368852004 + 279993289 = 36998^2 + 16733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648845293 - 2¹⁶ = 1648779757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648845203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824422646 + 824422647.

It is an arithmetic number, because the mean of its divisors is an integer number (824422647).

Almost surely, 2^1648845293 is an apocalyptic number.

It is an amenable number.

1648845293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648845293 is an equidigital number, since it uses as much as digits as its factorization.

1648845293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 50.

The square root of 1648845293 is about 40605.9760749572. The cubic root of 1648845293 is about 1181.3900340766.

The spelling of 1648845293 in words is "one billion, six hundred forty-eight million, eight hundred forty-five thousand, two hundred ninety-three".