1109863309 has 8 divisors (see below), whose sum is σ = 1184122368. Its totient is φ = 1036601280.

The previous prime is 1109863273. The next prime is 1109863369. The reversal of 1109863309 is 9033689011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1109863309 - 2¹⁷ = 1109732237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109863369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246957 + ... + 251410.

It is an arithmetic number, because the mean of its divisors is an integer number (148015296).

Almost surely, 2^1109863309 is an apocalyptic number.

It is an amenable number.

1109863309 is a deficient number, since it is larger than the sum of its proper divisors (74259059).

1109863309 is a wasteful number, since it uses less digits than its factorization.

1109863309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498515.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1109863309 is about 33314.6110438048. The cubic root of 1109863309 is about 1035.3563022928.

The spelling of 1109863309 in words is "one billion, one hundred nine million, eight hundred sixty-three thousand, three hundred nine".