2648618993 has 2 divisors, whose sum is σ = 2648618994. Its totient is φ = 2648618992.

The previous prime is 2648618953. The next prime is 2648619011. The reversal of 2648618993 is 3998168462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1339047649 + 1309571344 = 36593^2 + 36188^2 .

It is a cyclic number.

It is not a de Polignac number, because 2648618993 - 2²⁰ = 2647570417 is a prime.

It is not a weakly prime, because it can be changed into another prime (2648618953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324309496 + 1324309497.

It is an arithmetic number, because the mean of its divisors is an integer number (1324309497).

Almost surely, 2^2648618993 is an apocalyptic number.

It is an amenable number.

2648618993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2648618993 is an equidigital number, since it uses as much as digits as its factorization.

2648618993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 56.

The square root of 2648618993 is about 51464.7354311668. The cubic root of 2648618993 is about 1383.5870750229.

The spelling of 2648618993 in words is "two billion, six hundred forty-eight million, six hundred eighteen thousand, nine hundred ninety-three".