1808298 has 16 divisors (see below), whose sum is σ = 4018560. Its totient is φ = 602748.

The previous prime is 1808297. The next prime is 1808309. The reversal of 1808298 is 8928081.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1808293) 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 7 ways as a sum of consecutive naturals, for example, 16690 + ... + 16797.

It is an arithmetic number, because the mean of its divisors is an integer number (251160).

2^1808298 is an apocalyptic number.

1808298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1808298 is an abundant number, since it is smaller than the sum of its proper divisors (2210262).

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

1808298 is a wasteful number, since it uses less digits than its factorization.

1808298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33498 (or 33492 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1808298 is about 1344.7297126189. The cubic root of 1808298 is about 121.8306797427.

The spelling of 1808298 in words is "one million, eight hundred eight thousand, two hundred ninety-eight".