1808196 has 48 divisors (see below), whose sum is σ = 4638144. Its totient is φ = 544896.

The previous prime is 1808167. The next prime is 1808207. The reversal of 1808196 is 6918081.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10366 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (96628).

2^1808196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2319072).

1808196 is an abundant number, since it is smaller than the sum of its proper divisors (2829948).

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

1808196 is a wasteful number, since it uses less digits than its factorization.

1808196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1808196 is about 1344.6917862469. The cubic root of 1808196 is about 121.8283890135.

The spelling of 1808196 in words is "one million, eight hundred eight thousand, one hundred ninety-six".