1109890219 has 2 divisors, whose sum is σ = 1109890220. Its totient is φ = 1109890218.

The previous prime is 1109890189. The next prime is 1109890259. The reversal of 1109890219 is 9120989011.

It is an a-pointer prime, because the next prime (1109890259) can be obtained adding 1109890219 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1109890219 - 2⁷ = 1109890091 is a prime.

It is a super-2 number, since 2×1109890219² = 2463712596463735922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1109890259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554945109 + 554945110.

It is an arithmetic number, because the mean of its divisors is an integer number (554945110).

Almost surely, 2^1109890219 is an apocalyptic number.

1109890219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109890219 is an equidigital number, since it uses as much as digits as its factorization.

1109890219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 40.

The square root of 1109890219 is about 33315.0149182017. The cubic root of 1109890219 is about 1035.3646700539.

The spelling of 1109890219 in words is "one billion, one hundred nine million, eight hundred ninety thousand, two hundred nineteen".