8120658893 has 2 divisors, whose sum is σ = 8120658894. Its totient is φ = 8120658892.

The previous prime is 8120658883. The next prime is 8120658979. The reversal of 8120658893 is 3988560218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6610015204 + 1510643689 = 81302^2 + 38867^2 .

It is a cyclic number.

It is not a de Polignac number, because 8120658893 - 2⁴ = 8120658877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8120658803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060329446 + 4060329447.

It is an arithmetic number, because the mean of its divisors is an integer number (4060329447).

Almost surely, 2^8120658893 is an apocalyptic number.

It is an amenable number.

8120658893 is a deficient number, since it is larger than the sum of its proper divisors (1).

8120658893 is an equidigital number, since it uses as much as digits as its factorization.

8120658893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 8120658893 is about 90114.6985402492. The cubic root of 8120658893 is about 2010.0047765206.

The spelling of 8120658893 in words is "eight billion, one hundred twenty million, six hundred fifty-eight thousand, eight hundred ninety-three".