1003818 has 16 divisors (see below), whose sum is σ = 2018016. Its totient is φ = 332880.

The previous prime is 1003817. The next prime is 1003819. The reversal of 1003818 is 8183001.

It is a happy number.

1003818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1003817) and next prime (1003819).

It is a junction number, because it is equal to n+sod(n) for n = 1003794 and 1003803.

It is not an unprimeable number, because it can be changed into a prime (1003817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (126126).

2^1003818 is an apocalyptic number.

1003818 is an abundant number, since it is smaller than the sum of its proper divisors (1014198).

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

1003818 is a wasteful number, since it uses less digits than its factorization.

1003818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1003818 is about 1001.9071813297. The cubic root of 1003818 is about 100.1271050413.

Adding to 1003818 its reverse (8183001), we get a palindrome (9186819).

The spelling of 1003818 in words is "one million, three thousand, eight hundred eighteen".