1109712920 has 16 divisors (see below), whose sum is σ = 2496854160. Its totient is φ = 443885152.

The previous prime is 1109712907. The next prime is 1109712937. The reversal of 1109712920 is 292179011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13871372 + ... + 13871451.

It is an arithmetic number, because the mean of its divisors is an integer number (156053385).

Almost surely, 2^1109712920 is an apocalyptic number.

1109712920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109712920 is an abundant number, since it is smaller than the sum of its proper divisors (1387141240).

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

1109712920 is a wasteful number, since it uses less digits than its factorization.

1109712920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27742834 (or 27742830 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 1109712920 is about 33312.3538645950. The cubic root of 1109712920 is about 1035.3095358033.

The spelling of 1109712920 in words is "one billion, one hundred nine million, seven hundred twelve thousand, nine hundred twenty".