1008888785549 has 2 divisors, whose sum is σ = 1008888785550. Its totient is φ = 1008888785548.

The previous prime is 1008888785521. The next prime is 1008888785551. The reversal of 1008888785549 is 9455878888001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 849564071524 + 159324714025 = 921718^2 + 399155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1008888785549 - 2¹⁶ = 1008888720013 is a prime.

It is a super-2 number, since 2×1008888785549² (a number of 25 digits) contains 22 as substring.

Together with 1008888785551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1008888785249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504444392774 + 504444392775.

It is an arithmetic number, because the mean of its divisors is an integer number (504444392775).

Almost surely, 2^{1008888785549} is an apocalyptic number.

It is an amenable number.

1008888785549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1008888785549 is an equidigital number, since it uses as much as digits as its factorization.

1008888785549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 206438400, while the sum is 71.

The spelling of 1008888785549 in words is "one trillion, eight billion, eight hundred eighty-eight million, seven hundred eighty-five thousand, five hundred forty-nine".