1108541689 has 2 divisors, whose sum is σ = 1108541690. Its totient is φ = 1108541688.

The previous prime is 1108541669. The next prime is 1108541711. The reversal of 1108541689 is 9861458011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 871135225 + 237406464 = 29515^2 + 15408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1108541689 - 2¹⁷ = 1108410617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1108541659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554270844 + 554270845.

It is an arithmetic number, because the mean of its divisors is an integer number (554270845).

Almost surely, 2^1108541689 is an apocalyptic number.

It is an amenable number.

1108541689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1108541689 is an equidigital number, since it uses as much as digits as its factorization.

1108541689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 1108541689 is about 33294.7696943529. The cubic root of 1108541689 is about 1034.9451732570.

The spelling of 1108541689 in words is "one billion, one hundred eight million, five hundred forty-one thousand, six hundred eighty-nine".