1116217789 has 8 divisors (see below), whose sum is σ = 1154256480. Its totient is φ = 1078808016.

The previous prime is 1116217777. The next prime is 1116217799. The reversal of 1116217789 is 9877126111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1116217789 - 2¹³ = 1116209597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116217799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153619 + ... + 160720.

It is an arithmetic number, because the mean of its divisors is an integer number (144282060).

Almost surely, 2^1116217789 is an apocalyptic number.

It is an amenable number.

1116217789 is a deficient number, since it is larger than the sum of its proper divisors (38038691).

1116217789 is an equidigital number, since it uses as much as digits as its factorization.

1116217789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314459.

The product of its digits is 42336, while the sum is 43.

The square root of 1116217789 is about 33409.8456895568. The cubic root of 1116217789 is about 1037.3285074656.

The spelling of 1116217789 in words is "one billion, one hundred sixteen million, two hundred seventeen thousand, seven hundred eighty-nine".