818394013 has 8 divisors (see below), whose sum is σ = 821376000. Its totient is φ = 815418288.

The previous prime is 818394001. The next prime is 818394037. The reversal of 818394013 is 310493818.

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 818394013 - 2²¹ = 816296861 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 (818392013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527563 + ... + 529111.

It is an arithmetic number, because the mean of its divisors is an integer number (102672000).

Almost surely, 2^818394013 is an apocalyptic number.

It is an amenable number.

818394013 is a deficient number, since it is larger than the sum of its proper divisors (2981987).

818394013 is a wasteful number, since it uses less digits than its factorization.

818394013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 818394013 is about 28607.5866336187. The cubic root of 818394013 is about 935.3787109143.

The spelling of 818394013 in words is "eight hundred eighteen million, three hundred ninety-four thousand, thirteen".