1115663340 has 144 divisors (see below), whose sum is σ = 3523322880. Its totient is φ = 261590400.

The previous prime is 1115663317. The next prime is 1115663347. The reversal of 1115663340 is 433665111.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1115663298 and 1115663307.

It is not an unprimeable number, because it can be changed into a prime (1115663347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 633381 + ... + 635139.

It is an arithmetic number, because the mean of its divisors is an integer number (24467520).

Almost surely, 2^1115663340 is an apocalyptic number.

1115663340 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 1115663340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761661440).

1115663340 is an abundant number, since it is smaller than the sum of its proper divisors (2407659540).

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

1115663340 is a wasteful number, since it uses less digits than its factorization.

1115663340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1115663340 is about 33401.5469701629. The cubic root of 1115663340 is about 1037.1567246783.

The spelling of 1115663340 in words is "one billion, one hundred fifteen million, six hundred sixty-three thousand, three hundred forty".