1109659740 has 96 divisors (see below), whose sum is σ = 3574631424. Its totient is φ = 251942400.

The previous prime is 1109659709. The next prime is 1109659757. The reversal of 1109659740 is 479569011.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1109659692 and 1109659701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54672 + ... + 72168.

It is an arithmetic number, because the mean of its divisors is an integer number (37235744).

Almost surely, 2^1109659740 is an apocalyptic number.

1109659740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1109659740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1787315712).

1109659740 is an abundant number, since it is smaller than the sum of its proper divisors (2464971684).

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

1109659740 is a wasteful number, since it uses less digits than its factorization.

1109659740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17667 (or 17665 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 1109659740 is about 33311.5556526560. Note that the first 3 decimals coincide. The cubic root of 1109659740 is about 1035.2929973997.

The spelling of 1109659740 in words is "one billion, one hundred nine million, six hundred fifty-nine thousand, seven hundred forty".