1117765616 has 80 divisors (see below), whose sum is σ = 2435844096. Its totient is φ = 492480000.

The previous prime is 1117765591. The next prime is 1117765631. The reversal of 1117765616 is 6165677111.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1377851 + ... + 1378661.

Almost surely, 2^1117765616 is an apocalyptic number.

1117765616 is a gapful number since it is divisible by the number (16) 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 1117765616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217922048).

1117765616 is an abundant number, since it is smaller than the sum of its proper divisors (1318078480).

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

1117765616 is a wasteful number, since it uses less digits than its factorization.

1117765616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 1056 counting only the distinct ones).

The product of its digits is 52920, while the sum is 41.

The square root of 1117765616 is about 33433.0018993210. The cubic root of 1117765616 is about 1037.8077638467.

The spelling of 1117765616 in words is "one billion, one hundred seventeen million, seven hundred sixty-five thousand, six hundred sixteen".