818350665181 has 8 divisors (see below), whose sum is σ = 936158063360. Its totient is φ = 700768307088.

The previous prime is 818350665149. The next prime is 818350665193. The reversal of 818350665181 is 181566053818.

It is a happy number.

818350665181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 818350665181 - 2⁵ = 818350665149 is a prime.

It is a super-2 number, since 2×818350665181² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818350665101) 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, 56252226 + ... + 56266771.

It is an arithmetic number, because the mean of its divisors is an integer number (117019757920).

Almost surely, 2^818350665181 is an apocalyptic number.

It is an amenable number.

818350665181 is a deficient number, since it is larger than the sum of its proper divisors (117807398179).

818350665181 is a wasteful number, since it uses less digits than its factorization.

818350665181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112520043.

The product of its (nonzero) digits is 1382400, while the sum is 52.

The spelling of 818350665181 in words is "eight hundred eighteen billion, three hundred fifty million, six hundred sixty-five thousand, one hundred eighty-one".