818340001 has 8 divisors (see below), whose sum is σ = 831383784. Its totient is φ = 805345920.

The previous prime is 818339947. The next prime is 818340053. The reversal of 818340001 is 100043818.

It can be written as a sum of positive squares in 4 ways, for example, as 141039376 + 677300625 = 11876^2 + 26025^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 818340001 - 2¹³ = 818331809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818340301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21495 + ... + 45811.

It is an arithmetic number, because the mean of its divisors is an integer number (103922973).

Almost surely, 2^818340001 is an apocalyptic number.

It is an amenable number.

818340001 is a deficient number, since it is larger than the sum of its proper divisors (13043783).

818340001 is a wasteful number, since it uses less digits than its factorization.

818340001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24851.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 818340001 is about 28606.6426027243. The cubic root of 818340001 is about 935.3581328937.

Adding to 818340001 its reverse (100043818), we get a palindrome (918383819).

It can be divided in two parts, 8183 and 40001, that added together give a palindrome (48184).

The spelling of 818340001 in words is "eight hundred eighteen million, three hundred forty thousand, one".