8168591051 has 2 divisors, whose sum is σ = 8168591052. Its totient is φ = 8168591050.

The previous prime is 8168591033. The next prime is 8168591077. The reversal of 8168591051 is 1501958618.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8168591051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8168590993 and 8168591011.

It is not a weakly prime, because it can be changed into another prime (8168591021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4084295525 + 4084295526.

It is an arithmetic number, because the mean of its divisors is an integer number (4084295526).

Almost surely, 2^8168591051 is an apocalyptic number.

8168591051 is a deficient number, since it is larger than the sum of its proper divisors (1).

8168591051 is an equidigital number, since it uses as much as digits as its factorization.

8168591051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 44.

The square root of 8168591051 is about 90380.2580821719. The cubic root of 8168591051 is about 2013.9517029344.

The spelling of 8168591051 in words is "eight billion, one hundred sixty-eight million, five hundred ninety-one thousand, fifty-one".