1111816 has 8 divisors (see below), whose sum is σ = 2084670. Its totient is φ = 555904.

The previous prime is 1111801. The next prime is 1111841. The reversal of 1111816 is 6181111.

It can be written as a sum of positive squares in only one way, i.e., 1110916 + 900 = 1054^2 + 30^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1111816² = 2472269635712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111793 and 1111802.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69481 + ... + 69496.

2^1111816 is an apocalyptic number.

It is an amenable number.

1111816 is a deficient number, since it is larger than the sum of its proper divisors (972854).

1111816 is a wasteful number, since it uses less digits than its factorization.

1111816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138983 (or 138979 counting only the distinct ones).

The product of its digits is 48, while the sum is 19.

The square root of 1111816 is about 1054.4268585350. The cubic root of 1111816 is about 103.5963147718.

Adding to 1111816 its reverse (6181111), we get a palindrome (7292927).

The spelling of 1111816 in words is "one million, one hundred eleven thousand, eight hundred sixteen".