10111818 has 16 divisors (see below), whose sum is σ = 20262816. Its totient is φ = 3364080.

The previous prime is 10111811. The next prime is 10111847. The reversal of 10111818 is 81811101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10111794 and 10111803.

It is not an unprimeable number, because it can be changed into a prime (10111811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548 + ... + 5168.

It is an arithmetic number, because the mean of its divisors is an integer number (1266426).

Almost surely, 2^10111818 is an apocalyptic number.

10111818 is an abundant number, since it is smaller than the sum of its proper divisors (10150998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10111818 is a wasteful number, since it uses less digits than its factorization.

10111818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269.

The product of its (nonzero) digits is 64, while the sum is 21.

The square root of 10111818 is about 3179.9084892493. The cubic root of 10111818 is about 216.2435096674.

Adding to 10111818 its reverse (81811101), we get a palindrome (91922919).

The spelling of 10111818 in words is "ten million, one hundred eleven thousand, eight hundred eighteen".