1111011109 has 4 divisors (see below), whose sum is σ = 1196473516. Its totient is φ = 1025548704.

The previous prime is 1111011101. The next prime is 1111011179. The reversal of 1111011109 is 9011101111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9011101111 = 31 ⋅290680681.

It can be written as a sum of positive squares in 2 ways, for example, as 55086084 + 1055925025 = 7422^2 + 32495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111011109 - 2³ = 1111011101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111011092 and 1111011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111011101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42731184 + ... + 42731209.

It is an arithmetic number, because the mean of its divisors is an integer number (299118379).

Almost surely, 2^1111011109 is an apocalyptic number.

It is an amenable number.

1111011109 is a deficient number, since it is larger than the sum of its proper divisors (85462407).

1111011109 is an equidigital number, since it uses as much as digits as its factorization.

1111011109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85462406.

The product of its (nonzero) digits is 9, while the sum is 16.

The square root of 1111011109 is about 33331.8332679137. The cubic root of 1111011109 is about 1035.7130947380.

The spelling of 1111011109 in words is "one billion, one hundred eleven million, eleven thousand, one hundred nine".