2641993 has 2 divisors, whose sum is σ = 2641994. Its totient is φ = 2641992.

The previous prime is 2641949. The next prime is 2642039. The reversal of 2641993 is 3991462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 233289 = 1552^2 + 483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2641993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2641193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320996 + 1320997.

It is an arithmetic number, because the mean of its divisors is an integer number (1320997).

2^2641993 is an apocalyptic number.

It is an amenable number.

2641993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641993 is an equidigital number, since it uses as much as digits as its factorization.

2641993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 2641993 is about 1625.4208685753. The cubic root of 2641993 is about 138.2432348255.

The spelling of 2641993 in words is "two million, six hundred forty-one thousand, nine hundred ninety-three".