1806498 has 12 divisors (see below), whose sum is σ = 3914118. Its totient is φ = 602160.

The previous prime is 1806491. The next prime is 1806499. The reversal of 1806498 is 8946081.

It is a happy number.

1806498 is a `hidden beast` number, since 1 + 8 + 0 + 649 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1750329 + 56169 = 1323^2 + 237^2 .

It is not an unprimeable number, because it can be changed into a prime (1806491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50163 + ... + 50198.

2^1806498 is an apocalyptic number.

1806498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1806498 is an abundant number, since it is smaller than the sum of its proper divisors (2107620).

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

1806498 is a wasteful number, since it uses less digits than its factorization.

1806498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100369 (or 100366 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1806498 is about 1344.0602665059. The cubic root of 1806498 is about 121.7902424500.

It can be divided in two parts, 1806 and 498, that added together give a square (2304 = 48²).

The spelling of 1806498 in words is "one million, eight hundred six thousand, four hundred ninety-eight".