2516238649 has 2 divisors, whose sum is σ = 2516238650. Its totient is φ = 2516238648.

The previous prime is 2516238583. The next prime is 2516238691. The reversal of 2516238649 is 9468326152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2174543424 + 341695225 = 46632^2 + 18485^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516238649 - 2⁷ = 2516238521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2516238599 and 2516238608.

It is not a weakly prime, because it can be changed into another prime (2516235649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258119324 + 1258119325.

It is an arithmetic number, because the mean of its divisors is an integer number (1258119325).

Almost surely, 2^2516238649 is an apocalyptic number.

It is an amenable number.

2516238649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516238649 is an equidigital number, since it uses as much as digits as its factorization.

2516238649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The square root of 2516238649 is about 50162.1236492236. The cubic root of 2516238649 is about 1360.1410337089.

It can be divided in two parts, 2516 and 238649, that added together give a triangular number (241165 = T₆₉₄).

The spelling of 2516238649 in words is "two billion, five hundred sixteen million, two hundred thirty-eight thousand, six hundred forty-nine".