1116561726 has 128 divisors (see below), whose sum is σ = 3020544000. Its totient is φ = 305030880.

The previous prime is 1116561713. The next prime is 1116561731. The reversal of 1116561726 is 6271656111.

It is a happy number.

1116561726 is a `hidden beast` number, since 1 + 1 + 16 + 5 + 617 + 26 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 424696 + ... + 427316.

It is an arithmetic number, because the mean of its divisors is an integer number (23598000).

Almost surely, 2^1116561726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1116561726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510272000).

1116561726 is an abundant number, since it is smaller than the sum of its proper divisors (1903982274).

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

1116561726 is a wasteful number, since it uses less digits than its factorization.

1116561726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 2656 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 1116561726 is about 33414.9925332926. The cubic root of 1116561726 is about 1037.4350395482.

The spelling of 1116561726 in words is "one billion, one hundred sixteen million, five hundred sixty-one thousand, seven hundred twenty-six".