8619281897 has 2 divisors, whose sum is σ = 8619281898. Its totient is φ = 8619281896.

The previous prime is 8619281849. The next prime is 8619281939. The reversal of 8619281897 is 7981829168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5761417216 + 2857864681 = 75904^2 + 53459^2 .

It is a cyclic number.

It is not a de Polignac number, because 8619281897 - 2⁶ = 8619281833 is a prime.

It is not a weakly prime, because it can be changed into another prime (8619251897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4309640948 + 4309640949.

It is an arithmetic number, because the mean of its divisors is an integer number (4309640949).

Almost surely, 2^8619281897 is an apocalyptic number.

It is an amenable number.

8619281897 is a deficient number, since it is larger than the sum of its proper divisors (1).

8619281897 is an equidigital number, since it uses as much as digits as its factorization.

8619281897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 59.

The square root of 8619281897 is about 92840.0877692390. The cubic root of 8619281897 is about 2050.3296631843.

The spelling of 8619281897 in words is "eight billion, six hundred nineteen million, two hundred eighty-one thousand, eight hundred ninety-seven".