1109642280 has 32 divisors (see below), whose sum is σ = 3328927200. Its totient is φ = 295904576.

The previous prime is 1109642269. The next prime is 1109642353. The reversal of 1109642280 is 822469011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4623390 + ... + 4623629.

It is an arithmetic number, because the mean of its divisors is an integer number (104028975).

Almost surely, 2^1109642280 is an apocalyptic number.

1109642280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109642280 is an abundant number, since it is smaller than the sum of its proper divisors (2219284920).

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

1109642280 is a wasteful number, since it uses less digits than its factorization.

1109642280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247033 (or 9247029 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1109642280 is about 33311.2935804060. The cubic root of 1109642280 is about 1035.2875674137.

The spelling of 1109642280 in words is "one billion, one hundred nine million, six hundred forty-two thousand, two hundred eighty".