818981411365 has 8 divisors (see below), whose sum is σ = 1058375977848. Its totient is φ = 604786272960.

The previous prime is 818981411351. The next prime is 818981411449. The reversal of 818981411365 is 563114189818.

It can be written as a sum of positive squares in 4 ways, for example, as 8317075204 + 810664336161 = 91198^2 + 900369^2 .

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

It is not a de Polignac number, because 818981411365 - 2²⁹ = 818444540453 is a prime.

It is a super-2 number, since 2×818981411365² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6299856946 + ... + 6299857075.

It is an arithmetic number, because the mean of its divisors is an integer number (132296997231).

Almost surely, 2^818981411365 is an apocalyptic number.

It is an amenable number.

818981411365 is a deficient number, since it is larger than the sum of its proper divisors (239394566483).

818981411365 is a wasteful number, since it uses less digits than its factorization.

818981411365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12599714039.

The product of its digits is 1658880, while the sum is 55.

The spelling of 818981411365 in words is "eight hundred eighteen billion, nine hundred eighty-one million, four hundred eleven thousand, three hundred sixty-five".