818141819 has 8 divisors (see below), whose sum is σ = 893728512. Its totient is φ = 742756840.

The previous prime is 818141783. The next prime is 818141837. The reversal of 818141819 is 918141818.

It is a happy number.

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 818141819 - 2⁸ = 818141563 is a prime.

It is a super-2 number, since 2×818141819² = 1338712071993257522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818141719) 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, 41879 + ... + 58224.

It is an arithmetic number, because the mean of its divisors is an integer number (111716064).

Almost surely, 2^818141819 is an apocalyptic number.

818141819 is a deficient number, since it is larger than the sum of its proper divisors (75586693).

818141819 is a wasteful number, since it uses less digits than its factorization.

818141819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100857.

The product of its digits is 18432, while the sum is 41.

The square root of 818141819 is about 28603.1784772252. The cubic root of 818141819 is about 935.2826198179.

Subtracting 818141819 from its reverse (918141818), we obtain a palindrome (99999999).

The spelling of 818141819 in words is "eight hundred eighteen million, one hundred forty-one thousand, eight hundred nineteen".