1109008123 has 2 divisors, whose sum is σ = 1109008124. Its totient is φ = 1109008122.

The previous prime is 1109008049. The next prime is 1109008129. The reversal of 1109008123 is 3218009011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1109008123 - 2¹⁷ = 1108877051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109008129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554504061 + 554504062.

It is an arithmetic number, because the mean of its divisors is an integer number (554504062).

Almost surely, 2^1109008123 is an apocalyptic number.

1109008123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109008123 is an equidigital number, since it uses as much as digits as its factorization.

1109008123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1109008123 is about 33301.7735713881. The cubic root of 1109008123 is about 1035.0903086578.

The spelling of 1109008123 in words is "one billion, one hundred nine million, eight thousand, one hundred twenty-three".