9995810845 has 16 divisors (see below), whose sum is σ = 12094201008. Its totient is φ = 7930690560.

The previous prime is 9995810837. The next prime is 9995810861. The reversal of 9995810845 is 5480185999.

It can be written as a sum of positive squares in 8 ways, for example, as 975750169 + 9020060676 = 31237^2 + 94974^2 .

It is not a de Polignac number, because 9995810845 - 2³ = 9995810837 is a prime.

It is a super-2 number, since 2×9995810845² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9995810845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412917 + ... + 436453.

It is an arithmetic number, because the mean of its divisors is an integer number (755887563).

Almost surely, 2^9995810845 is an apocalyptic number.

It is an amenable number.

9995810845 is a deficient number, since it is larger than the sum of its proper divisors (2098390163).

9995810845 is a wasteful number, since it uses less digits than its factorization.

9995810845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24240.

The product of its (nonzero) digits is 4665600, while the sum is 58.

The square root of 9995810845 is about 99979.0520309130. The cubic root of 9995810845 is about 2154.1338059845.

The spelling of 9995810845 in words is "nine billion, nine hundred ninety-five million, eight hundred ten thousand, eight hundred forty-five".