1008888109 has 2 divisors, whose sum is σ = 1008888110. Its totient is φ = 1008888108.

The previous prime is 1008888037. The next prime is 1008888113. The reversal of 1008888109 is 9018888001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935014084 + 73874025 = 30578^2 + 8595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1008888109 - 2⁷ = 1008887981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1008889109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504444054 + 504444055.

It is an arithmetic number, because the mean of its divisors is an integer number (504444055).

Almost surely, 2^1008888109 is an apocalyptic number.

It is an amenable number.

1008888109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1008888109 is an equidigital number, since it uses as much as digits as its factorization.

1008888109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 43.

The square root of 1008888109 is about 31762.9990555048. Note that the first 3 decimals coincide. The cubic root of 1008888109 is about 1002.9539684782.

The spelling of 1008888109 in words is "one billion, eight million, eight hundred eighty-eight thousand, one hundred nine".