1818416 has 20 divisors (see below), whose sum is σ = 3645600. Its totient is φ = 877632.

The previous prime is 1818413. The next prime is 1818419. The reversal of 1818416 is 6148181.

It is an interprime number because it is at equal distance from previous prime (1818413) and next prime (1818419).

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1818413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1496 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (182280).

2^1818416 is an apocalyptic number.

1818416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1818416 is an abundant number, since it is smaller than the sum of its proper divisors (1827184).

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

1818416 is a wasteful number, since it uses less digits than its factorization.

1818416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956 (or 3950 counting only the distinct ones).

The product of its digits is 1536, while the sum is 29.

The square root of 1818416 is about 1348.4865590728. The cubic root of 1818416 is about 122.0574843318.

The spelling of 1818416 in words is "one million, eight hundred eighteen thousand, four hundred sixteen".