1109319640 has 64 divisors (see below), whose sum is σ = 2932342560. Its totient is φ = 372357120.

The previous prime is 1109319623. The next prime is 1109319641. The reversal of 1109319640 is 469139011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1109319596 and 1109319605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109319641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91249 + ... + 102688.

Almost surely, 2^1109319640 is an apocalyptic number.

1109319640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109319640 is an abundant number, since it is smaller than the sum of its proper divisors (1823022920).

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

1109319640 is a wasteful number, since it uses less digits than its factorization.

1109319640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193972 (or 193968 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1109319640 is about 33306.4504263063. The cubic root of 1109319640 is about 1035.1872174884.

The spelling of 1109319640 in words is "one billion, one hundred nine million, three hundred nineteen thousand, six hundred forty".