1109689252 has 12 divisors (see below), whose sum is σ = 2219378560. Its totient is φ = 475581096.

The previous prime is 1109689219. The next prime is 1109689253. The reversal of 1109689252 is 2529869011.

1109689252 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1109689199 and 1109689208.

It is not an unprimeable number, because it can be changed into a prime (1109689253) 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, 19815852 + ... + 19815907.

Almost surely, 2^1109689252 is an apocalyptic number.

It is an amenable number.

1109689252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1109689252 is a wasteful number, since it uses less digits than its factorization.

1109689252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39631770 (or 39631768 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1109689252 is about 33311.9986191162. The cubic root of 1109689252 is about 1035.3021753771.

The spelling of 1109689252 in words is "one billion, one hundred nine million, six hundred eighty-nine thousand, two hundred fifty-two".