818479243 has 4 divisors (see below), whose sum is σ = 837513688. Its totient is φ = 799444800.

The previous prime is 818479241. The next prime is 818479279. The reversal of 818479243 is 342974818.

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 818479243 - 2¹ = 818479241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 818479193 and 818479202.

It is not an unprimeable number, because it can be changed into a prime (818479241) 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, 9517158 + ... + 9517243.

It is an arithmetic number, because the mean of its divisors is an integer number (209378422).

Almost surely, 2^818479243 is an apocalyptic number.

818479243 is a deficient number, since it is larger than the sum of its proper divisors (19034445).

818479243 is a wasteful number, since it uses less digits than its factorization.

818479243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19034444.

The product of its digits is 387072, while the sum is 46.

The square root of 818479243 is about 28609.0762346497. The cubic root of 818479243 is about 935.4111808326.

The spelling of 818479243 in words is "eight hundred eighteen million, four hundred seventy-nine thousand, two hundred forty-three".