1798985 has 8 divisors (see below), whose sum is σ = 2167296. Its totient is φ = 1433520.

The previous prime is 1798967. The next prime is 1798987. The reversal of 1798985 is 5898971.

It is a happy number.

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

It is not a de Polignac number, because 1798985 - 2⁶ = 1798921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1798987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1112 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (270912).

2^1798985 is an apocalyptic number.

It is an amenable number.

1798985 is a deficient number, since it is larger than the sum of its proper divisors (368311).

1798985 is a wasteful number, since it uses less digits than its factorization.

1798985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423.

The product of its digits is 181440, while the sum is 47.

The square root of 1798985 is about 1341.2624649933. The cubic root of 1798985 is about 121.6211710383.

The spelling of 1798985 in words is "one million, seven hundred ninety-eight thousand, nine hundred eighty-five".