8621916487 has 2 divisors, whose sum is σ = 8621916488. Its totient is φ = 8621916486.

The previous prime is 8621916451. The next prime is 8621916521. The reversal of 8621916487 is 7846191268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8621916487 - 2¹¹ = 8621914439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8621916437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4310958243 + 4310958244.

It is an arithmetic number, because the mean of its divisors is an integer number (4310958244).

Almost surely, 2^8621916487 is an apocalyptic number.

8621916487 is a deficient number, since it is larger than the sum of its proper divisors (1).

8621916487 is an equidigital number, since it uses as much as digits as its factorization.

8621916487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 52.

The square root of 8621916487 is about 92854.2755450712. The cubic root of 8621916487 is about 2050.5385447675.

The spelling of 8621916487 in words is "eight billion, six hundred twenty-one million, nine hundred sixteen thousand, four hundred eighty-seven".