8158196593 has 2 divisors, whose sum is σ = 8158196594. Its totient is φ = 8158196592.

The previous prime is 8158196587. The next prime is 8158196609. The reversal of 8158196593 is 3956918518.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7244222769 + 913973824 = 85113^2 + 30232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8158196593 is a prime.

It is not a weakly prime, because it can be changed into another prime (8158196093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4079098296 + 4079098297.

It is an arithmetic number, because the mean of its divisors is an integer number (4079098297).

Almost surely, 2^8158196593 is an apocalyptic number.

It is an amenable number.

8158196593 is a deficient number, since it is larger than the sum of its proper divisors (1).

8158196593 is an equidigital number, since it uses as much as digits as its factorization.

8158196593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 55.

The square root of 8158196593 is about 90322.7357479832. The cubic root of 8158196593 is about 2013.0970952484.

The spelling of 8158196593 in words is "eight billion, one hundred fifty-eight million, one hundred ninety-six thousand, five hundred ninety-three".