1109815968 has 48 divisors (see below), whose sum is σ = 2915087616. Its totient is φ = 369707520.

The previous prime is 1109815961. The next prime is 1109816009. The reversal of 1109815968 is 8695189011.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1109815961) by changing a digit.

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, 227313 + ... + 232143.

It is an arithmetic number, because the mean of its divisors is an integer number (60730992).

Almost surely, 2^1109815968 is an apocalyptic number.

It is an amenable number.

1109815968 is an abundant number, since it is smaller than the sum of its proper divisors (1805271648).

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

1109815968 is a wasteful number, since it uses less digits than its factorization.

1109815968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7237 (or 7229 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 48.

The square root of 1109815968 is about 33313.9005221544. The cubic root of 1109815968 is about 1035.3415811107.

The spelling of 1109815968 in words is "one billion, one hundred nine million, eight hundred fifteen thousand, nine hundred sixty-eight".