1109218879 has 8 divisors (see below), whose sum is σ = 1196077680. Its totient is φ = 1025208000.

The previous prime is 1109218813. The next prime is 1109218897. The reversal of 1109218879 is 9788129011.

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 1109218879 - 2¹¹ = 1109216831 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 (1109212879) 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, 711172 + ... + 712729.

It is an arithmetic number, because the mean of its divisors is an integer number (149509710).

Almost surely, 2^1109218879 is an apocalyptic number.

1109218879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1109218879 is a deficient number, since it is larger than the sum of its proper divisors (86858801).

1109218879 is a wasteful number, since it uses less digits than its factorization.

1109218879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423961.

The product of its (nonzero) digits is 72576, while the sum is 46.

The square root of 1109218879 is about 33304.9377570354. The cubic root of 1109218879 is about 1035.1558740554.

The spelling of 1109218879 in words is "one billion, one hundred nine million, two hundred eighteen thousand, eight hundred seventy-nine".