818046013 has 4 divisors (see below), whose sum is σ = 818795548. Its totient is φ = 817296480.

The previous prime is 818045999. The next prime is 818046017. The reversal of 818046013 is 310640818.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310640818 = 2 ⋅155320409.

It can be written as a sum of positive squares in 2 ways, for example, as 597166969 + 220879044 = 24437^2 + 14862^2 .

It is a cyclic number.

It is not a de Polignac number, because 818046013 - 2¹³ = 818037821 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 (818046017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373128 + ... + 375313.

It is an arithmetic number, because the mean of its divisors is an integer number (204698887).

Almost surely, 2^818046013 is an apocalyptic number.

It is an amenable number.

818046013 is a deficient number, since it is larger than the sum of its proper divisors (749535).

818046013 is a wasteful number, since it uses less digits than its factorization.

818046013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749534.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 818046013 is about 28601.5036842471. The cubic root of 818046013 is about 935.2461105875.

The spelling of 818046013 in words is "eight hundred eighteen million, forty-six thousand, thirteen".