811418 has 4 divisors (see below), whose sum is σ = 1217130. Its totient is φ = 405708.

The previous prime is 811411. The next prime is 811429. The reversal of 811418 is 814118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814118 = 2 ⋅407059.

It can be written as a sum of positive squares in only one way, i.e., 786769 + 24649 = 887^2 + 157^2 .

It is a junction number, because it is equal to n+sod(n) for n = 811393 and 811402.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 811418.

It is not an unprimeable number, because it can be changed into a prime (811411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202853 + ... + 202856.

2⁸¹¹⁴¹⁸ is an apocalyptic number.

811418 is a deficient number, since it is larger than the sum of its proper divisors (405712).

811418 is a wasteful number, since it uses less digits than its factorization.

811418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405711.

The product of its digits is 256, while the sum is 23.

The square root of 811418 is about 900.7874333049. The cubic root of 811418 is about 93.2713392167.

The spelling of 811418 in words is "eight hundred eleven thousand, four hundred eighteen".