1812115 has 8 divisors (see below), whose sum is σ = 2302560. Its totient is φ = 1364352.

The previous prime is 1812103. The next prime is 1812121. The reversal of 1812115 is 5112181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1812115 - 2⁷ = 1811987 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1812092 and 1812101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10575 + ... + 10744.

It is an arithmetic number, because the mean of its divisors is an integer number (287820).

2^1812115 is an apocalyptic number.

1812115 is a deficient number, since it is larger than the sum of its proper divisors (490445).

1812115 is a wasteful number, since it uses less digits than its factorization.

1812115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21341.

The product of its digits is 80, while the sum is 19.

The square root of 1812115 is about 1346.1482087794. The cubic root of 1812115 is about 121.9163405668.

Adding to 1812115 its reverse (5112181), we get a palindrome (6924296).

The spelling of 1812115 in words is "one million, eight hundred twelve thousand, one hundred fifteen".