100005818 has 8 divisors (see below), whose sum is σ = 163645920. Its totient is φ = 45457180.

The previous prime is 100005809. The next prime is 100005821. The reversal of 100005818 is 818500001.

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

It is a junction number, because it is equal to n+sod(n) for n = 100005793 and 100005802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2272838 + ... + 2272881.

It is an arithmetic number, because the mean of its divisors is an integer number (20455740).

Almost surely, 2^100005818 is an apocalyptic number.

100005818 is a deficient number, since it is larger than the sum of its proper divisors (63640102).

100005818 is a wasteful number, since it uses less digits than its factorization.

100005818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545732.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 100005818 is about 10000.2908957690. The cubic root of 100005818 is about 464.1678847747.

Adding to 100005818 its reverse (818500001), we get a palindrome (918505819).

The spelling of 100005818 in words is "one hundred million, five thousand, eight hundred eighteen".