818214071 has 4 divisors (see below), whose sum is σ = 818273544. Its totient is φ = 818154600.

The previous prime is 818214049. The next prime is 818214073. The reversal of 818214071 is 170412818.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 170412818 = 2 ⋅85206409.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-818214071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818214073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2681 + ... + 40541.

It is an arithmetic number, because the mean of its divisors is an integer number (204568386).

Almost surely, 2^818214071 is an apocalyptic number.

818214071 is a deficient number, since it is larger than the sum of its proper divisors (59473).

818214071 is a wasteful number, since it uses less digits than its factorization.

818214071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59472.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 818214071 is about 28604.4414558299. The cubic root of 818214071 is about 935.3101513327.

Adding to 818214071 its reverse (170412818), we get a palindrome (988626889).

The spelling of 818214071 in words is "eight hundred eighteen million, two hundred fourteen thousand, seventy-one".