1105061609 has 4 divisors (see below), whose sum is σ = 1105284180. Its totient is φ = 1104839040.

The previous prime is 1105061567. The next prime is 1105061623. The reversal of 1105061609 is 9061605011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9061605011 = 4931 ⋅1837681.

It can be written as a sum of positive squares in 2 ways, for example, as 302586025 + 802475584 = 17395^2 + 28328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105061609 is a prime.

It is a super-2 number, since 2×1105061609² = 2442322319371337762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1105061669) 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, 103664 + ... + 113825.

It is an arithmetic number, because the mean of its divisors is an integer number (276321045).

Almost surely, 2^1105061609 is an apocalyptic number.

It is an amenable number.

1105061609 is a deficient number, since it is larger than the sum of its proper divisors (222571).

1105061609 is an equidigital number, since it uses as much as digits as its factorization.

1105061609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222570.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 1105061609 is about 33242.4669511756. The cubic root of 1105061609 is about 1033.8610259218.

The spelling of 1105061609 in words is "one billion, one hundred five million, sixty-one thousand, six hundred nine".