818047471 has 2 divisors, whose sum is σ = 818047472. Its totient is φ = 818047470.

The previous prime is 818047459. The next prime is 818047487. The reversal of 818047471 is 174740818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 818047471 - 2¹⁷ = 817916399 is a prime.

It is a super-3 number, since 3×818047471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (818047411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409023735 + 409023736.

It is an arithmetic number, because the mean of its divisors is an integer number (409023736).

Almost surely, 2^818047471 is an apocalyptic number.

818047471 is a deficient number, since it is larger than the sum of its proper divisors (1).

818047471 is an equidigital number, since it uses as much as digits as its factorization.

818047471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 818047471 is about 28601.5291724061. The cubic root of 818047471 is about 935.2466662156.

The spelling of 818047471 in words is "eight hundred eighteen million, forty-seven thousand, four hundred seventy-one".