1109145259 has 2 divisors, whose sum is σ = 1109145260. Its totient is φ = 1109145258.

The previous prime is 1109145253. The next prime is 1109145299. The reversal of 1109145259 is 9525419011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1109145259 - 2³ = 1109145251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109145251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554572629 + 554572630.

It is an arithmetic number, because the mean of its divisors is an integer number (554572630).

Almost surely, 2^1109145259 is an apocalyptic number.

1109145259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109145259 is an equidigital number, since it uses as much as digits as its factorization.

1109145259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 1109145259 is about 33303.8324971767. The cubic root of 1109145259 is about 1035.1329720947.

The spelling of 1109145259 in words is "one billion, one hundred nine million, one hundred forty-five thousand, two hundred fifty-nine".