1808466 has 48 divisors (see below), whose sum is σ = 4136832. Its totient is φ = 526240.

The previous prime is 1808459. The next prime is 1808479. The reversal of 1808466 is 6648081.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34096 + ... + 34148.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2^1808466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2068416).

1808466 is an abundant number, since it is smaller than the sum of its proper divisors (2328366).

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

1808466 is a wasteful number, since it uses less digits than its factorization.

1808466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1808466 is about 1344.7921772527. The cubic root of 1808466 is about 121.8344525207.

It can be divided in two parts, 180 and 8466, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 1808466 in words is "one million, eight hundred eight thousand, four hundred sixty-six".