1111105609 has 16 divisors (see below), whose sum is σ = 1141152768. Its totient is φ = 1081608192.

The previous prime is 1111105571. The next prime is 1111105613. The reversal of 1111105609 is 9065011111.

It is a cyclic number.

It is not a de Polignac number, because 1111105609 - 2⁹ = 1111105097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111105649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830184 + ... + 1830790.

It is an arithmetic number, because the mean of its divisors is an integer number (71322048).

Almost surely, 2^1111105609 is an apocalyptic number.

It is an amenable number.

1111105609 is a deficient number, since it is larger than the sum of its proper divisors (30047159).

1111105609 is a wasteful number, since it uses less digits than its factorization.

1111105609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 270, while the sum is 25.

The square root of 1111105609 is about 33333.2508015645. The cubic root of 1111105609 is about 1035.7424590146.

The spelling of 1111105609 in words is "one billion, one hundred eleven million, one hundred five thousand, six hundred nine".