1109688940 has 24 divisors (see below), whose sum is σ = 2467426752. Its totient is φ = 417765120.

The previous prime is 1109688913. The next prime is 1109688947. The reversal of 1109688940 is 498869011.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1109688947) 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, 1631556 + ... + 1632235.

It is an arithmetic number, because the mean of its divisors is an integer number (102809448).

Almost surely, 2^1109688940 is an apocalyptic number.

1109688940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109688940 is an abundant number, since it is smaller than the sum of its proper divisors (1357737812).

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

1109688940 is a wasteful number, since it uses less digits than its factorization.

1109688940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263817 (or 3263815 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 1109688940 is about 33311.9939361186. The cubic root of 1109688940 is about 1035.3020783486.

The spelling of 1109688940 in words is "one billion, one hundred nine million, six hundred eighty-eight thousand, nine hundred forty".