1109655400 has 96 divisors (see below), whose sum is σ = 2955882240. Its totient is φ = 379503360.

The previous prime is 1109655353. The next prime is 1109655431. The reversal of 1109655400 is 45569011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 779089 + ... + 780511.

It is an arithmetic number, because the mean of its divisors is an integer number (30790440).

Almost surely, 2^1109655400 is an apocalyptic number.

1109655400 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 1109655400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477941120).

1109655400 is an abundant number, since it is smaller than the sum of its proper divisors (1846226840).

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

1109655400 is a wasteful number, since it uses less digits than its factorization.

1109655400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1109655400 is about 33311.4905100327. The cubic root of 1109655400 is about 1035.2916476834.

The spelling of 1109655400 in words is "one billion, one hundred nine million, six hundred fifty-five thousand, four hundred".