1816115 has 16 divisors (see below), whose sum is σ = 2622720. Its totient is φ = 1179360.

The previous prime is 1816099. The next prime is 1816117. The reversal of 1816115 is 5116181.

It is a happy number.

It is not a de Polignac number, because 1816115 - 2⁴ = 1816099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1816117) by changing a digit.

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, 701 + ... + 2030.

It is an arithmetic number, because the mean of its divisors is an integer number (163920).

2^1816115 is an apocalyptic number.

1816115 is a deficient number, since it is larger than the sum of its proper divisors (806605).

1816115 is a wasteful number, since it uses less digits than its factorization.

1816115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762.

The product of its digits is 240, while the sum is 23.

The square root of 1816115 is about 1347.6331103086. The cubic root of 1816115 is about 122.0059792823.

The spelling of 1816115 in words is "one million, eight hundred sixteen thousand, one hundred fifteen".