2644241993 has 2 divisors, whose sum is σ = 2644241994. Its totient is φ = 2644241992.

The previous prime is 2644241983. The next prime is 2644242017. The reversal of 2644241993 is 3991424462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2330668729 + 313573264 = 48277^2 + 17708^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644241993 - 2²⁶ = 2577133129 is a prime.

It is a super-2 number, since 2×2644241993² = 13984031435089224098, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2644241933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322120996 + 1322120997.

It is an arithmetic number, because the mean of its divisors is an integer number (1322120997).

Almost surely, 2^2644241993 is an apocalyptic number.

It is an amenable number.

2644241993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644241993 is an equidigital number, since it uses as much as digits as its factorization.

2644241993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 44.

The square root of 2644241993 is about 51422.1935840936. The cubic root of 2644241993 is about 1382.8245015643.

The spelling of 2644241993 in words is "two billion, six hundred forty-four million, two hundred forty-one thousand, nine hundred ninety-three".