1118979559 has 8 divisors (see below), whose sum is σ = 1247160240. Its totient is φ = 997727616.

The previous prime is 1118979553. The next prime is 1118979569. The reversal of 1118979559 is 9559798111.

It is a happy number.

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 1118979559 - 2¹⁷ = 1118848487 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 (1118979553) 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, 1731844 + ... + 1732489.

It is an arithmetic number, because the mean of its divisors is an integer number (155895030).

Almost surely, 2^1118979559 is an apocalyptic number.

1118979559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1118979559 is a deficient number, since it is larger than the sum of its proper divisors (128180681).

1118979559 is a wasteful number, since it uses less digits than its factorization.

1118979559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464369.

The product of its digits is 1020600, while the sum is 55.

The square root of 1118979559 is about 33451.1518336813. The cubic root of 1118979559 is about 1038.1833296620.

The spelling of 1118979559 in words is "one billion, one hundred eighteen million, nine hundred seventy-nine thousand, five hundred fifty-nine".