2519934721 has 2 divisors, whose sum is σ = 2519934722. Its totient is φ = 2519934720.

The previous prime is 2519934709. The next prime is 2519934737. The reversal of 2519934721 is 1274399152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2431574721 + 88360000 = 49311^2 + 9400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2519934721 - 2¹¹ = 2519932673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2519934761) 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, 1259967360 + 1259967361.

It is an arithmetic number, because the mean of its divisors is an integer number (1259967361).

Almost surely, 2^2519934721 is an apocalyptic number.

It is an amenable number.

2519934721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2519934721 is an equidigital number, since it uses as much as digits as its factorization.

2519934721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 2519934721 is about 50198.9513934305. The cubic root of 2519934721 is about 1360.8066727101.

The spelling of 2519934721 in words is "two billion, five hundred nineteen million, nine hundred thirty-four thousand, seven hundred twenty-one".