1111079808 has 128 divisors (see below), whose sum is σ = 3368244000. Its totient is φ = 360308736.

The previous prime is 1111079797. The next prime is 1111079819. The reversal of 1111079808 is 8089701111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1111079797) and next prime (1111079819).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123528 + ... + 132216.

Almost surely, 2^1111079808 is an apocalyptic number.

1111079808 is a gapful number since it is divisible by the number (18) 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 1111079808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684122000).

1111079808 is an abundant number, since it is smaller than the sum of its proper divisors (2257164192).

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

1111079808 is an equidigital number, since it uses as much as digits as its factorization.

1111079808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8749 (or 8731 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 36.

The square root of 1111079808 is about 33332.8637833595. The cubic root of 1111079808 is about 1035.7344419555.

The spelling of 1111079808 in words is "one billion, one hundred eleven million, seventy-nine thousand, eight hundred eight".