2516895109 has 2 divisors, whose sum is σ = 2516895110. Its totient is φ = 2516895108.

The previous prime is 2516895077. The next prime is 2516895113. The reversal of 2516895109 is 9015986152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111678209 + 405216900 = 45953^2 + 20130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516895109 - 2⁵ = 2516895077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2516895209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258447554 + 1258447555.

It is an arithmetic number, because the mean of its divisors is an integer number (1258447555).

Almost surely, 2^2516895109 is an apocalyptic number.

It is an amenable number.

2516895109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516895109 is an equidigital number, since it uses as much as digits as its factorization.

2516895109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 46.

The square root of 2516895109 is about 50168.6666057610. Note that the first 4 decimals coincide. The cubic root of 2516895109 is about 1360.2593055518.

The spelling of 2516895109 in words is "two billion, five hundred sixteen million, eight hundred ninety-five thousand, one hundred nine".