1798345 has 8 divisors (see below), whose sum is σ = 2285064. Its totient is φ = 1353984.

The previous prime is 1798333. The next prime is 1798351. The reversal of 1798345 is 5438971.

It can be written as a sum of positive squares in 4 ways, for example, as 45369 + 1752976 = 213^2 + 1324^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1798345 - 2⁹ = 1797833 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 10494 + ... + 10663.

It is an arithmetic number, because the mean of its divisors is an integer number (285633).

2^1798345 is an apocalyptic number.

It is an amenable number.

1798345 is a deficient number, since it is larger than the sum of its proper divisors (486719).

1798345 is a wasteful number, since it uses less digits than its factorization.

1798345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21179.

The product of its digits is 30240, while the sum is 37.

The square root of 1798345 is about 1341.0238625767. The cubic root of 1798345 is about 121.6067468339.

The spelling of 1798345 in words is "one million, seven hundred ninety-eight thousand, three hundred forty-five".