7868488489 has 2 divisors, whose sum is σ = 7868488490. Its totient is φ = 7868488488.

The previous prime is 7868488469. The next prime is 7868488493. The reversal of 7868488489 is 9848848687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4348083600 + 3520404889 = 65940^2 + 59333^2 .

It is an emirp because it is prime and its reverse (9848848687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7868488489 - 2²⁵ = 7834934057 is a prime.

It is a super-2 number, since 2×7868488489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7868488469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3934244244 + 3934244245.

It is an arithmetic number, because the mean of its divisors is an integer number (3934244245).

Almost surely, 2^7868488489 is an apocalyptic number.

It is an amenable number.

7868488489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7868488489 is an equidigital number, since it uses as much as digits as its factorization.

7868488489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198180864, while the sum is 70.

The square root of 7868488489 is about 88704.5009511919. The cubic root of 7868488489 is about 1988.9800998366.

The spelling of 7868488489 in words is "seven billion, eight hundred sixty-eight million, four hundred eighty-eight thousand, four hundred eighty-nine".