988566619 has 2 divisors, whose sum is σ = 988566620. Its totient is φ = 988566618.

The previous prime is 988566617. The next prime is 988566641. The reversal of 988566619 is 916665889.

It is a weak prime.

It is an emirp because it is prime and its reverse (916665889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 988566619 - 2¹ = 988566617 is a prime.

It is a super-2 number, since 2×988566619² = 1954527920402182322, which contains 22 as substring.

Together with 988566617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (988566617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494283309 + 494283310.

It is an arithmetic number, because the mean of its divisors is an integer number (494283310).

Almost surely, 2^988566619 is an apocalyptic number.

988566619 is a deficient number, since it is larger than the sum of its proper divisors (1).

988566619 is an equidigital number, since it uses as much as digits as its factorization.

988566619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 58.

The square root of 988566619 is about 31441.4792749960. The cubic root of 988566619 is about 996.1742553428.

The spelling of 988566619 in words is "nine hundred eighty-eight million, five hundred sixty-six thousand, six hundred nineteen".