1109533140 has 72 divisors (see below), whose sum is σ = 3490250400. Its totient is φ = 295874208.

The previous prime is 1109533129. The next prime is 1109533141. The reversal of 1109533140 is 413359011.

1109533140 is a `hidden beast` number, since 110 + 9 + 533 + 14 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109533141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109290 + ... + 119009.

It is an arithmetic number, because the mean of its divisors is an integer number (48475700).

Almost surely, 2^1109533140 is an apocalyptic number.

1109533140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109533140 is an abundant number, since it is smaller than the sum of its proper divisors (2380717260).

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

1109533140 is a wasteful number, since it uses less digits than its factorization.

1109533140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228323 (or 228309 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1109533140 is about 33309.6553569682. The cubic root of 1109533140 is about 1035.2536240454.

The spelling of 1109533140 in words is "one billion, one hundred nine million, five hundred thirty-three thousand, one hundred forty".