9820309195969 has 4 divisors (see below), whose sum is σ = 9820317383620. Its totient is φ = 9820301008320.

The previous prime is 9820309195951. The next prime is 9820309195973. The reversal of 9820309195969 is 9695919030289.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4978306988944 + 4842002207025 = 2231212^2 + 2200455^2 .

It is a cyclic number.

It is not a de Polignac number, because 9820309195969 - 2⁵ = 9820309195937 is a prime.

It is a super-2 number, since 2×9820309195969² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9820309195898 and 9820309195907.

It is not an unprimeable number, because it can be changed into a prime (9820309195919) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1904412 + ... + 4823629.

It is an arithmetic number, because the mean of its divisors is an integer number (2455079345905).

Almost surely, 2^{9820309195969} is an apocalyptic number.

It is an amenable number.

9820309195969 is a deficient number, since it is larger than the sum of its proper divisors (8187651).

9820309195969 is a wasteful number, since it uses less digits than its factorization.

9820309195969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8187650.

The product of its (nonzero) digits is 85030560, while the sum is 70.

The spelling of 9820309195969 in words is "nine trillion, eight hundred twenty billion, three hundred nine million, one hundred ninety-five thousand, nine hundred sixty-nine".