1111845 has 16 divisors (see below), whose sum is σ = 2033280. Its totient is φ = 508224.

The previous prime is 1111841. The next prime is 1111853. The reversal of 1111845 is 5481111.

It is a happy number.

It is not a de Polignac number, because 1111845 - 2² = 1111841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5190 + ... + 5399.

It is an arithmetic number, because the mean of its divisors is an integer number (127080).

2^1111845 is an apocalyptic number.

1111845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111845 is a deficient number, since it is larger than the sum of its proper divisors (921435).

1111845 is a wasteful number, since it uses less digits than its factorization.

1111845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604.

The product of its digits is 160, while the sum is 21.

The square root of 1111845 is about 1054.4406099919. The cubic root of 1111845 is about 103.5972154805.

Adding to 1111845 its reverse (5481111), we get a palindrome (6592956).

The spelling of 1111845 in words is "one million, one hundred eleven thousand, eight hundred forty-five".