818018407 has 4 divisors (see below), whose sum is σ = 821201616. Its totient is φ = 814835200.

The previous prime is 818018401. The next prime is 818018417. The reversal of 818018407 is 704810818.

818018407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 818018407 - 2¹¹ = 818016359 is a prime.

It is a super-2 number, since 2×818018407² = 1338308228381635298, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818018401) 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, 1591219 + ... + 1591732.

It is an arithmetic number, because the mean of its divisors is an integer number (205300404).

Almost surely, 2^818018407 is an apocalyptic number.

818018407 is a deficient number, since it is larger than the sum of its proper divisors (3183209).

818018407 is a wasteful number, since it uses less digits than its factorization.

818018407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183208.

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 818018407 is about 28601.0210831711. The cubic root of 818018407 is about 935.2355901139.

The spelling of 818018407 in words is "eight hundred eighteen million, eighteen thousand, four hundred seven".