2646440323 has 2 divisors, whose sum is σ = 2646440324. Its totient is φ = 2646440322.

The previous prime is 2646440299. The next prime is 2646440341. The reversal of 2646440323 is 3230446462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2646440323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2646443323) 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, 1323220161 + 1323220162.

It is an arithmetic number, because the mean of its divisors is an integer number (1323220162).

Almost surely, 2^2646440323 is an apocalyptic number.

2646440323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646440323 is an equidigital number, since it uses as much as digits as its factorization.

2646440323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 34.

The square root of 2646440323 is about 51443.5644468771. The cubic root of 2646440323 is about 1383.2076060053.

Adding to 2646440323 its reverse (3230446462), we get a palindrome (5876886785).

The spelling of 2646440323 in words is "two billion, six hundred forty-six million, four hundred forty thousand, three hundred twenty-three".