1108663289 has 2 divisors, whose sum is σ = 1108663290. Its totient is φ = 1108663288.

The previous prime is 1108663253. The next prime is 1108663333. The reversal of 1108663289 is 9823668011.

It is an a-pointer prime, because the next prime (1108663333) can be obtained adding 1108663289 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912523264 + 196140025 = 30208^2 + 14005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1108663289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1108663219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554331644 + 554331645.

It is an arithmetic number, because the mean of its divisors is an integer number (554331645).

Almost surely, 2^1108663289 is an apocalyptic number.

It is an amenable number.

1108663289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1108663289 is an equidigital number, since it uses as much as digits as its factorization.

1108663289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1108663289 is about 33296.5957569239. The cubic root of 1108663289 is about 1034.9830141829.

The spelling of 1108663289 in words is "one billion, one hundred eight million, six hundred sixty-three thousand, two hundred eighty-nine".