1111080816 has 60 divisors (see below), whose sum is σ = 3111788680. Its totient is φ = 370085760.

The previous prime is 1111080797. The next prime is 1111080821. The reversal of 1111080816 is 6180801111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111080816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312006 + ... + 315546.

Almost surely, 2^1111080816 is an apocalyptic number.

1111080816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1111080816 is an abundant number, since it is smaller than the sum of its proper divisors (2000707864).

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

1111080816 is a wasteful number, since it uses less digits than its factorization.

1111080816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734 (or 5725 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 27.

The square root of 1111080816 is about 33332.8789035691. The cubic root of 1111080816 is about 1035.7347551703.

Adding to 1111080816 its reverse (6180801111), we get a palindrome (7291881927).

The spelling of 1111080816 in words is "one billion, one hundred eleven million, eighty thousand, eight hundred sixteen".