2516394889 has 2 divisors, whose sum is σ = 2516394890. Its totient is φ = 2516394888.

The previous prime is 2516394887. The next prime is 2516394919. The reversal of 2516394889 is 9884936152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2439569664 + 76825225 = 49392^2 + 8765^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516394889 - 2¹ = 2516394887 is a prime.

Together with 2516394887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2516394883) 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, 1258197444 + 1258197445.

It is an arithmetic number, because the mean of its divisors is an integer number (1258197445).

Almost surely, 2^2516394889 is an apocalyptic number.

It is an amenable number.

2516394889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516394889 is an equidigital number, since it uses as much as digits as its factorization.

2516394889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 55.

The square root of 2516394889 is about 50163.6809753830. The cubic root of 2516394889 is about 1360.1691847267.

The spelling of 2516394889 in words is "two billion, five hundred sixteen million, three hundred ninety-four thousand, eight hundred eighty-nine".