9919257853 has 2 divisors, whose sum is σ = 9919257854. Its totient is φ = 9919257852.

The previous prime is 9919257827. The next prime is 9919257917. The reversal of 9919257853 is 3587529199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9007338649 + 911919204 = 94907^2 + 30198^2 .

It is a cyclic number.

It is not a de Polignac number, because 9919257853 - 2¹³ = 9919249661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9910257853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4959628926 + 4959628927.

It is an arithmetic number, because the mean of its divisors is an integer number (4959628927).

Almost surely, 2^9919257853 is an apocalyptic number.

It is an amenable number.

9919257853 is a deficient number, since it is larger than the sum of its proper divisors (1).

9919257853 is an equidigital number, since it uses as much as digits as its factorization.

9919257853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6123600, while the sum is 58.

The square root of 9919257853 is about 99595.4710466294. The cubic root of 9919257853 is about 2148.6205575748.

The spelling of 9919257853 in words is "nine billion, nine hundred nineteen million, two hundred fifty-seven thousand, eight hundred fifty-three".