9420323681 has 2 divisors, whose sum is σ = 9420323682. Its totient is φ = 9420323680.

The previous prime is 9420323669. The next prime is 9420323687. The reversal of 9420323681 is 1863230249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9386509456 + 33814225 = 96884^2 + 5815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9420323681 is a prime.

It is a super-2 number, since 2×9420323681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9420323687) 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 as a sum of consecutive naturals, namely, 4710161840 + 4710161841.

It is an arithmetic number, because the mean of its divisors is an integer number (4710161841).

Almost surely, 2^9420323681 is an apocalyptic number.

It is an amenable number.

9420323681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9420323681 is an equidigital number, since it uses as much as digits as its factorization.

9420323681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 9420323681 is about 97058.3519384087. The cubic root of 9420323681 is about 2111.9741996180.

The spelling of 9420323681 in words is "nine billion, four hundred twenty million, three hundred twenty-three thousand, six hundred eighty-one".