8358190681 has 2 divisors, whose sum is σ = 8358190682. Its totient is φ = 8358190680.

The previous prime is 8358190637. The next prime is 8358190697. The reversal of 8358190681 is 1860918538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7430440000 + 927750681 = 86200^2 + 30459^2 .

It is a cyclic number.

It is not a de Polignac number, because 8358190681 - 2¹³ = 8358182489 is a prime.

It is a super-2 number, since 2×8358190681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8358190481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4179095340 + 4179095341.

It is an arithmetic number, because the mean of its divisors is an integer number (4179095341).

Almost surely, 2^8358190681 is an apocalyptic number.

It is an amenable number.

8358190681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8358190681 is an equidigital number, since it uses as much as digits as its factorization.

8358190681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 8358190681 is about 91423.1408397239. The cubic root of 8358190681 is about 2029.4144963042.

The spelling of 8358190681 in words is "eight billion, three hundred fifty-eight million, one hundred ninety thousand, six hundred eighty-one".