2419906721 has 2 divisors, whose sum is σ = 2419906722. Its totient is φ = 2419906720.

The previous prime is 2419906679. The next prime is 2419906729. The reversal of 2419906721 is 1276099142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2418672400 + 1234321 = 49180^2 + 1111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2419906721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2419906729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1209953360 + 1209953361.

It is an arithmetic number, because the mean of its divisors is an integer number (1209953361).

Almost surely, 2^2419906721 is an apocalyptic number.

It is an amenable number.

2419906721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2419906721 is an equidigital number, since it uses as much as digits as its factorization.

2419906721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2419906721 is about 49192.5474132007. The cubic root of 2419906721 is about 1342.5574388301.

The spelling of 2419906721 in words is "two billion, four hundred nineteen million, nine hundred six thousand, seven hundred twenty-one".