1117228389 has 16 divisors (see below), whose sum is σ = 1596272832. Its totient is φ = 692557568.

The previous prime is 1117228379. The next prime is 1117228403. The reversal of 1117228389 is 9838227111.

It is a cyclic number.

It is not a de Polignac number, because 1117228389 - 2²⁴ = 1100451173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1117228389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117228319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127734 + ... + 136199.

It is an arithmetic number, because the mean of its divisors is an integer number (99767052).

Almost surely, 2^1117228389 is an apocalyptic number.

It is an amenable number.

1117228389 is a deficient number, since it is larger than the sum of its proper divisors (479044443).

1117228389 is a wasteful number, since it uses less digits than its factorization.

1117228389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264036.

The product of its digits is 48384, while the sum is 42.

The square root of 1117228389 is about 33424.9665519653. The cubic root of 1117228389 is about 1037.6414714714.

The spelling of 1117228389 in words is "one billion, one hundred seventeen million, two hundred twenty-eight thousand, three hundred eighty-nine".