108908081 has 2 divisors, whose sum is σ = 108908082. Its totient is φ = 108908080.

The previous prime is 108908047. The next prime is 108908083. The reversal of 108908081 is 180809801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75082225 + 33825856 = 8665^2 + 5816^2 .

It is an emirp because it is prime and its reverse (180809801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108908081 - 2¹⁸ = 108645937 is a prime.

It is a super-2 number, since 2×108908081² = 23721940214205122, which contains 22 as substring.

Together with 108908083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (108908083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54454040 + 54454041.

It is an arithmetic number, because the mean of its divisors is an integer number (54454041).

Almost surely, 2^108908081 is an apocalyptic number.

It is an amenable number.

108908081 is a deficient number, since it is larger than the sum of its proper divisors (1).

108908081 is an equidigital number, since it uses as much as digits as its factorization.

108908081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 108908081 is about 10435.9034587332. The cubic root of 108908081 is about 477.5513039363.

The spelling of 108908081 in words is "one hundred eight million, nine hundred eight thousand, eighty-one".