7852895621 has 2 divisors, whose sum is σ = 7852895622. Its totient is φ = 7852895620.

The previous prime is 7852895593. The next prime is 7852895623. The reversal of 7852895621 is 1265982587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4242568225 + 3610327396 = 65135^2 + 60086^2 .

It is an emirp because it is prime and its reverse (1265982587) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7852895621 is a prime.

It is a Sophie Germain prime.

Together with 7852895623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7852895623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3926447810 + 3926447811.

It is an arithmetic number, because the mean of its divisors is an integer number (3926447811).

Almost surely, 2^7852895621 is an apocalyptic number.

It is an amenable number.

7852895621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7852895621 is an equidigital number, since it uses as much as digits as its factorization.

7852895621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 53.

The square root of 7852895621 is about 88616.5651613738. The cubic root of 7852895621 is about 1987.6653867936.

The spelling of 7852895621 in words is "seven billion, eight hundred fifty-two million, eight hundred ninety-five thousand, six hundred twenty-one".