8189081297 has 2 divisors, whose sum is σ = 8189081298. Its totient is φ = 8189081296.

The previous prime is 8189081281. The next prime is 8189081309. The reversal of 8189081297 is 7921809818.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6677504656 + 1511576641 = 81716^2 + 38879^2 .

It is a cyclic number.

It is not a de Polignac number, because 8189081297 - 2⁴ = 8189081281 is a prime.

It is a super-2 number, since 2×8189081297² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8189081227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4094540648 + 4094540649.

It is an arithmetic number, because the mean of its divisors is an integer number (4094540649).

Almost surely, 2^8189081297 is an apocalyptic number.

It is an amenable number.

8189081297 is a deficient number, since it is larger than the sum of its proper divisors (1).

8189081297 is an equidigital number, since it uses as much as digits as its factorization.

8189081297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 53.

The square root of 8189081297 is about 90493.5428469899. The cubic root of 8189081297 is about 2015.6342415399.

The spelling of 8189081297 in words is "eight billion, one hundred eighty-nine million, eighty-one thousand, two hundred ninety-seven".