10001818 has 8 divisors (see below), whose sum is σ = 15024960. Its totient is φ = 4993500.

The previous prime is 10001813. The next prime is 10001819. The reversal of 10001818 is 81810001.

10001818 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.

10001818 is a modest number, since divided by 1818 gives 1000 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 10001795 and 10001804.

It is not an unprimeable number, because it can be changed into a prime (10001813) 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, 1828 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (1878120).

Almost surely, 2^10001818 is an apocalyptic number.

10001818 is a deficient number, since it is larger than the sum of its proper divisors (5023142).

10001818 is an equidigital number, since it uses as much as digits as its factorization.

10001818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7412.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 10001818 is about 3162.5650981442. The cubic root of 10001818 is about 215.4565240863.

Adding to 10001818 its reverse (81810001), we get a palindrome (91811819).

It can be divided in two parts, 10001 and 818, that multiplied together give a palindrome (8180818).

The spelling of 10001818 in words is "ten million, one thousand, eight hundred eighteen".